Question

4x - 9 = 2x+7 дайте проверку плиз

Answer 1

4х - 2х = 7+9
2х = 16
х=8
4х8=32
2х8 = 16
32-16=7+9
16=16

Answer 2

4х-2х=7+9
2х=16
х=16÷2
х=8
4х8-2х8=16
32-16=16
16=16