Question

помагите плз пжпжпжпжпжпжп

Answer 1

1. $(-2,5+2\frac{1}{3}) *(-5\frac{1}{7} ) :1\frac{1}{3} =-2\frac{1}{2} +2\frac{1}{3} *(-\frac{36}{7}):\frac{4}{3} =- \frac{1}{6} *(-\frac{36}{7}) *\frac{3}{4} = \frac{9}{14}$

3.(a+b)*c=ac+bc

a=0.3 b=-0.2  c=-0.8

0.3*(-0.8)+(-0.2)*(-0.8)=-0.24+0.16=-0.08

4.

10.2/1.5+0.8=x

x=6.8+0.8

x=7.6