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1)![frac{3x-1}{4}- frac{2x+3}{3}=1 frac{3x-1}{4}- frac{2x+3}{3}=1](https://tex.z-dn.net/?f=+frac%7B3x-1%7D%7B4%7D-+frac%7B2x%2B3%7D%7B3%7D%3D1++)
![frac{3(3x-1)-4(2x+3)}{12} =1 frac{3(3x-1)-4(2x+3)}{12} =1](https://tex.z-dn.net/?f=+frac%7B3%283x-1%29-4%282x%2B3%29%7D%7B12%7D+%3D1)
![frac{9x-3-8x-12}{12}=1 frac{9x-3-8x-12}{12}=1](https://tex.z-dn.net/?f=+frac%7B9x-3-8x-12%7D%7B12%7D%3D1+)
![frac{x-15}{12} =1 frac{x-15}{12} =1](https://tex.z-dn.net/?f=+frac%7Bx-15%7D%7B12%7D+%3D1)
![frac{x-15-12}{12} =0 frac{x-15-12}{12} =0](https://tex.z-dn.net/?f=+frac%7Bx-15-12%7D%7B12%7D+%3D0)
![frac{x-27}{12}=0 frac{x-27}{12}=0](https://tex.z-dn.net/?f=+frac%7Bx-27%7D%7B12%7D%3D0+)
x=27
2)![frac{1}{2}x-1= frac{1}{3}(x+ frac{3}{4}) frac{1}{2}x-1= frac{1}{3}(x+ frac{3}{4})](https://tex.z-dn.net/?f=+frac%7B1%7D%7B2%7Dx-1%3D+frac%7B1%7D%7B3%7D%28x%2B+frac%7B3%7D%7B4%7D%29+++)
![frac{1}{2}x- frac{1}{3}x=1+ frac{3}{12} frac{1}{2}x- frac{1}{3}x=1+ frac{3}{12}](https://tex.z-dn.net/?f=+frac%7B1%7D%7B2%7Dx-+frac%7B1%7D%7B3%7Dx%3D1%2B+frac%7B3%7D%7B12%7D+++)
![frac{1}{6}x= frac{15}{12} frac{1}{6}x= frac{15}{12}](https://tex.z-dn.net/?f=+frac%7B1%7D%7B6%7Dx%3D+frac%7B15%7D%7B12%7D++)
![x= frac{15}{2}=7,5 x= frac{15}{2}=7,5](https://tex.z-dn.net/?f=+x%3D+frac%7B15%7D%7B2%7D%3D7%2C5+)
3)![frac{1}{3}x-1= frac{1}{4(x+ frac{4}{5}) } frac{1}{3}x-1= frac{1}{4(x+ frac{4}{5}) }](https://tex.z-dn.net/?f=+frac%7B1%7D%7B3%7Dx-1%3D+frac%7B1%7D%7B4%28x%2B+frac%7B4%7D%7B5%7D%29+%7D++)
![frac{1}{3}x-1= frac{1}{4}x+ frac{4}{20} frac{1}{3}x-1= frac{1}{4}x+ frac{4}{20}](https://tex.z-dn.net/?f=+frac%7B1%7D%7B3%7Dx-1%3D+frac%7B1%7D%7B4%7Dx%2B+frac%7B4%7D%7B20%7D+++)
![frac{1}{3}x- frac{1}{4}x=1+ frac{1}{5} frac{1}{3}x- frac{1}{4}x=1+ frac{1}{5}](https://tex.z-dn.net/?f=+frac%7B1%7D%7B3%7Dx-+frac%7B1%7D%7B4%7Dx%3D1%2B+frac%7B1%7D%7B5%7D+++)
![frac{1}{12}x= frac{6}{5} frac{1}{12}x= frac{6}{5}](https://tex.z-dn.net/?f=+frac%7B1%7D%7B12%7Dx%3D+frac%7B6%7D%7B5%7D++)
![x= frac{72}{5}=14,4 x= frac{72}{5}=14,4](https://tex.z-dn.net/?f=+x%3D+frac%7B72%7D%7B5%7D%3D14%2C4+)
x=27
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3)
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хорошо,сейчас решу и третий =)
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