Question

5,6-3(2-0,4x)=0,4(4x+1)

Answer 1

Ответ:

$5.6 - 3(2 - 0.4x) = 0.4(4x + 1) \\ 5.6 - 6 + 1.2x = 1.6x + 0.4 \\ 5.6 - 6 + 1.2x - 1.6x - 0.4 = 0 \\ - 0.8 - 0.4 x = 0 \\ - 0.4x = 0.8 \\ x = - 2$