Question

0.8(3Х-14)-0.3(4-5Х) ПРИ   Х=З  1/13

Answer 1

$0.8(3x-14)-0.3(4-5x)=2.4x-11.2-1.2+1.5x=3.9x-12.4 3.9*3-12.4=-0.7 3.9* 1/13-12.4=-12.1$