Question

помогите!!! срочно надоо​

Answer 1

Ответ:

Пошаговое объяснение:

1)

-3.4 * 2.7 = -9.18

13.52 / (-13) = -1.04

$-1\frac{11}{17}*(-12\frac{3}{4})=-\frac{28}{17}*(-\frac{51}{4})=-7*(-3)=21$

$1\frac{2}{3}/ (-3\frac{1}{3})=\frac{5}{3}/(-\frac{10}{3})=\frac{5}{3}*(-\frac{3}{10})=-\frac{1}{2}$

2)

(-9.18/3.4-3.7)*2.1+2.04= -6.4*2.1+2.04=-11.4

3)

-12a-25b+18a+14b = 6a-11b

-0.64+m+0.18 = -0.46 + m

4)

x-0.2x = $\frac{8}{15}$

0.8x = $\frac{8}{15}$

x=$\frac{8}{15}/\frac{8}{10}=\frac{8}{15}*\frac{10}{8}=\frac{2}{3}$

x=$\frac{2}{3}$