Question

3x+2=12-3 (3x+3) решите уравнение, спасибо.)

Answer 1

3x +2 = 12- 9x - 9

3x +2 = 3-9x

3x + 9x = 3 -2

12x = 1

x = 1/12

Answer 2

$3x + 2 = 12 - 3(3x + 3) \\ 3x + 2 = 12 - 9x - 9 \\ 3x + 2 = 3 - 9x \\ 3x + 9x = 3 - 2 \\ 12x = 1 \div 12 \\ x = \frac{1}{12}$