Ответы
Ответ дал:
2
Вычисли
1)![\frac{12}{10} ( \frac{12}{10} +\frac{17}{10} + \frac{21}{10} + \frac{29}{10} + \frac{33}{10} + \frac{38}{10} )= \frac{2}{3} (\frac{50}{10}+\frac{50}{10}+\frac{50}{10})= \frac{2}{3}* \frac{150}{10}=10 \frac{12}{10} ( \frac{12}{10} +\frac{17}{10} + \frac{21}{10} + \frac{29}{10} + \frac{33}{10} + \frac{38}{10} )= \frac{2}{3} (\frac{50}{10}+\frac{50}{10}+\frac{50}{10})= \frac{2}{3}* \frac{150}{10}=10](https://tex.z-dn.net/?f=+%5Cfrac%7B12%7D%7B10%7D+%28+%5Cfrac%7B12%7D%7B10%7D+%2B%5Cfrac%7B17%7D%7B10%7D+%2B+%5Cfrac%7B21%7D%7B10%7D+%2B+%5Cfrac%7B29%7D%7B10%7D+%2B+%5Cfrac%7B33%7D%7B10%7D+%2B+%5Cfrac%7B38%7D%7B10%7D+%29%3D+%5Cfrac%7B2%7D%7B3%7D+%28%5Cfrac%7B50%7D%7B10%7D%2B%5Cfrac%7B50%7D%7B10%7D%2B%5Cfrac%7B50%7D%7B10%7D%29%3D+%5Cfrac%7B2%7D%7B3%7D%2A+%5Cfrac%7B150%7D%7B10%7D%3D10++)
Реши уравнения
1)![3(x-7)+4=7x-1 3(x-7)+4=7x-1](https://tex.z-dn.net/?f=3%28x-7%29%2B4%3D7x-1)
![3x-21+4-7x+1=0 3x-21+4-7x+1=0](https://tex.z-dn.net/?f=3x-21%2B4-7x%2B1%3D0)
![-4x-16=0 -4x-16=0](https://tex.z-dn.net/?f=-4x-16%3D0)
![x=-4 x=-4](https://tex.z-dn.net/?f=x%3D-4)
2)![2x-3(x-1)=4+2(x-1) 2x-3(x-1)=4+2(x-1)](https://tex.z-dn.net/?f=2x-3%28x-1%29%3D4%2B2%28x-1%29)
![2x-3x+3-4-2x+2=0 2x-3x+3-4-2x+2=0](https://tex.z-dn.net/?f=2x-3x%2B3-4-2x%2B2%3D0)
![-3x+1=0 -3x+1=0](https://tex.z-dn.net/?f=-3x%2B1%3D0)
![x= \frac{1}{3} x= \frac{1}{3}](https://tex.z-dn.net/?f=x%3D+%5Cfrac%7B1%7D%7B3%7D+)
3)![\frac{x}{3} + \frac{x+1}{4}=2 \frac{x}{3} + \frac{x+1}{4}=2](https://tex.z-dn.net/?f=+%5Cfrac%7Bx%7D%7B3%7D+%2B+%5Cfrac%7Bx%2B1%7D%7B4%7D%3D2+)
![\frac{x}{3} + \frac{x+1}{4}-2=0 \frac{x}{3} + \frac{x+1}{4}-2=0](https://tex.z-dn.net/?f=+%5Cfrac%7Bx%7D%7B3%7D+%2B+%5Cfrac%7Bx%2B1%7D%7B4%7D-2%3D0+)
![\frac{4x+3x+3-24}{12}=0 \frac{4x+3x+3-24}{12}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B4x%2B3x%2B3-24%7D%7B12%7D%3D0+)
![\frac{7x-21}{12}=0 \frac{7x-21}{12}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B7x-21%7D%7B12%7D%3D0+)
![7x-21=0 7x-21=0](https://tex.z-dn.net/?f=7x-21%3D0)
![x=3 x=3](https://tex.z-dn.net/?f=x%3D3)
4)![3x-1,5=2(x-0,75)+x 3x-1,5=2(x-0,75)+x](https://tex.z-dn.net/?f=3x-1%2C5%3D2%28x-0%2C75%29%2Bx)
![3x-1,5-2x+1,5-x=0 3x-1,5-2x+1,5-x=0](https://tex.z-dn.net/?f=3x-1%2C5-2x%2B1%2C5-x%3D0)
![x-x=0 x-x=0](https://tex.z-dn.net/?f=x-x%3D0)
x любое действительное число
5)![\frac{x-2}{3}- \frac{x-3}{y2}=2 \frac{x-2}{3}- \frac{x-3}{y2}=2](https://tex.z-dn.net/?f=+%5Cfrac%7Bx-2%7D%7B3%7D-+%5Cfrac%7Bx-3%7D%7By2%7D%3D2++)
![\frac{x-2}{3}- \frac{x-3}{y2} -2=0 \frac{x-2}{3}- \frac{x-3}{y2} -2=0](https://tex.z-dn.net/?f=+%5Cfrac%7Bx-2%7D%7B3%7D-+%5Cfrac%7Bx-3%7D%7By2%7D+-2%3D0)
![\frac{2(x-2)-3(x-3)-12}{6}=0 \frac{2(x-2)-3(x-3)-12}{6}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B2%28x-2%29-3%28x-3%29-12%7D%7B6%7D%3D0)
![\frac{2x-4-3x+9-12}{6}=0 \frac{2x-4-3x+9-12}{6}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B2x-4-3x%2B9-12%7D%7B6%7D%3D0)
![\frac{-x-7}{6}=0 \frac{-x-7}{6}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B-x-7%7D%7B6%7D%3D0)
![x=-7 x=-7](https://tex.z-dn.net/?f=x%3D-7)
6)![\frac{2(x-2)}{3}- \frac{3(x-3)}{4}=x+6 \frac{1}{3} \frac{2(x-2)}{3}- \frac{3(x-3)}{4}=x+6 \frac{1}{3}](https://tex.z-dn.net/?f=+%5Cfrac%7B2%28x-2%29%7D%7B3%7D-+%5Cfrac%7B3%28x-3%29%7D%7B4%7D%3Dx%2B6+%5Cfrac%7B1%7D%7B3%7D+++)
![\frac{2(x-2)}{3}- \frac{3(x-3)}{4}-x-6 \frac{1}{3}=0 \frac{2(x-2)}{3}- \frac{3(x-3)}{4}-x-6 \frac{1}{3}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B2%28x-2%29%7D%7B3%7D-+%5Cfrac%7B3%28x-3%29%7D%7B4%7D-x-6+%5Cfrac%7B1%7D%7B3%7D%3D0++)
![\frac{2(x-2)}{3}- \frac{3(x-3)}{4}-x- \frac{19}{3}=0 \frac{2(x-2)}{3}- \frac{3(x-3)}{4}-x- \frac{19}{3}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B2%28x-2%29%7D%7B3%7D-+%5Cfrac%7B3%28x-3%29%7D%7B4%7D-x-+%5Cfrac%7B19%7D%7B3%7D%3D0++)
![\frac{8(x-2)-9(x-3)-12x-76}{12}=0 \frac{8(x-2)-9(x-3)-12x-76}{12}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B8%28x-2%29-9%28x-3%29-12x-76%7D%7B12%7D%3D0+)
![\frac{8x-16-9x+27-12x-76}{12}=0 \frac{8x-16-9x+27-12x-76}{12}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B8x-16-9x%2B27-12x-76%7D%7B12%7D%3D0+)
![\frac{-13x-65}{12}=0 \frac{-13x-65}{12}=0](https://tex.z-dn.net/?f=+%5Cfrac%7B-13x-65%7D%7B12%7D%3D0+)
![-13x-65=0 -13x-65=0](https://tex.z-dn.net/?f=+-13x-65%3D0)
![x= \frac{-65}{13}=-5 x= \frac{-65}{13}=-5](https://tex.z-dn.net/?f=x%3D+%5Cfrac%7B-65%7D%7B13%7D%3D-5)
1)
Реши уравнения
1)
2)
3)
4)
x любое действительное число
5)
6)
Аноним:
6 задание решено неправильно. Правильный ответ x= -5
Ответ дал:
0
Ответы смотри ниже. Здесь все правильно.
Приложения:
![](https://st.uroker.com/files/389/389e1099f8693d1283fbad366c519291.jpg)
![](https://st.uroker.com/files/892/892fb2d035cd0db0c78f28f9ad57ffa5.jpg)
![](https://st.uroker.com/files/c38/c3885a806fa506eb7b986b9aaa3c1e82.jpg)
![](https://st.uroker.com/files/a83/a8389806a9b72c130374def9c86f8847.jpg)
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