Question

решите уравнение 5(x+3)+7=3(x+12)

Answer 1

5(x+3)+7=3(x+12)
5х+15+7=3х+36
5х-3х=36-15-7
2х=14
х=14:2
х=7

Answer 2

5(x+3)+7=3(x+12)

5x + 15 +7 = 3x + 36

5x - 3x = 36 -15-7

2x = 14

x = 14/2

x = 7