Question

Решите уравнение 2 (x - 3) - (4 - (2x + 7)) = 5

Answer 1

Ответ:

х=2

Объяснение:

2 (x - 3) - (4 - (2x + 7)) = 5

2х-6 - (4 - 2х-7)=5

2х -6 -4 +2х+7=5

4х=5+6+4-7

4х= 8

х=8:4

х=2

Answer 2

Объяснение:

$2(x - 3) - (4 - (2x + 7)) = 5 \\ 2x - 6 - (4 - (2x + 7)) = 5 \\ 2x - 6 - (4 - 2x - 7) = 5 \\ 2x - 6 - ( - 3 - 2x) = 5 \\ 2x - 6 - ( - 3) - ( - 2x) = 5 \\ 2x - 6 + 3 - ( - 2x) = 5 \\ 2x - 6 + 3 + 2x = 5 \\ 2x - 3 + 2x = 5 \\ 4x - 3 = 5 \\ 4x = 5 + 3 \\ 4x = 8 \div 4 \\ x = 2$