Question

Упростить выражение: 2/7(4 2/3 м-1,4)-2/9(6м+2,7)

Answer 1

2/7(4 2/3м-1,4)-2/9(6м+2,7)=
2/7*14m/3-2/7*14/10-2/9*6m/1-2/9*27/10=
4m/3-0.4-4m/3-0.6=-1

Answer 2

$frac{2}{7}(4frac{2}{3}m-1,4)-frac{2}{9}(6m+2,7)=frac{2}{7}(frac{14}{3}m-1,4)-frac{2}{9}(6m+2,7)=frac{4}{3}m-0,4-frac{4}{3}m-0,6=(frac{4}{3}m-frac{4}{3}m)+(-0,4-0,6)=-1$