0.6х - 8 - 0.4х + 3 = -12

Question

0.6х - 8 - 0.4х + 3 = -12

Answer 1

0.6х-8-0.4х+3=-12
0.6х-0.4х=-12+8-3
0.2x=-7
x=-7/0.2
x=-35

Answer 2

0.2x-5=-12
0.2x=-12+5
0.2x=-7
x=-7/0.2
x=-35
Проверяем: 0.2*(-35)-5=-12
Ответ: - 35