Question

Помогите ПОЖАЛУЙСТА надо упростить выражение

Answer 1

1)

$-0,3*a*3\frac{1}{3}=-\frac{3}{10}*a*\frac{10}{3}=-a*\frac{3}{10}*\frac{10}{3}=-a*1=-a$

2)

$2\frac{2}{5}*b*(-\frac{5}{12})=-b*\frac{12}{5}*\frac{5}{12}=-b*\frac{12}{5}*\frac{5}{12}=-b$

3)

$-\frac{18}{25}*x*(-2.5)=\frac{18}{25}*x*2.5=x*\frac{18}{25}*\frac{25}{10}=x*\frac{18}{10}=x*1\frac{8}{10}=1\frac{4}{5}x=1.8x$

4)

$2.4*(-\frac{2}{3})^{3}*a=2.4*(-\frac{2^{3}}{3^{3}})*a=-\frac{24}{10}*\frac{8}{27}*a=-a*\frac{8}{10}*\frac{8}{9}=-a*\frac{4}{5}*\frac{8}{9}=-a*\frac{32}{45}=-\frac{32}{45}a$