Question

Срочно надо пожалуйста

Answer 1

4x-12 = 2x+3
2x=15
X=7,5

Answer 2

$4 \times (x - 3) = 2x + 3 \\ 4 \times x - 4 \times 3 = 2x + 3 \\ 4x - 12 = 2x + 3 \\ 4x - 2x = 3 + 12 \\ 2x = 15 \\ x = 15 \div 2 \\ x = 7.5$