Question

Решите уравнения 1,6(а-4)-0,6=3(0,4а-7)

Answer 1

1,6a - 6,4 - 0,6 = 1,2a - 21
1,6a - 7 = 1,2a - 21
1,6a - 1,2a = 7 - 21
0,4a = -14
a = -14 ÷ 0,4
a = - 35

Answer 2

1.6(a-4)-0.6=3(0.4a-7)
1.6a-6.4-0.6=1.2a-21
1.6a-1.2a=-21+6.4+0.6
0.4a=-14
a=-35