Question

5(3x-0.2)-1.2(10x-5)=x-7 ​

Answer 1

Объяснение:

$5(3x - 0.2) - 1.2(10x - 5) = x - 7 \\ 15x - 1 - 12x + 6 = x - 7 \\ 3x + 5 = x - 7 \\ 3x - x = - 7 - 5 \\ 2x = - 7 - 5 \\ 2x = - 12 \div 2 \\ x = - 6$

Answer 2

15х-0,5-12х+6=х-7
2х=-12,5
х=-6,25