Question

2/3(x-2)+1/4(x+1)=9 решите пожалуйста

Answer 1

$\frac{2}{3} x - \frac{4}{3} + \frac{1}{4} x + \frac{1}{4} = 9 \\ \frac{2}{3} x - \frac{13}{12} + \frac{1}{4} x = 9 \\ 8x - 13 + 3x = 108 \\ 11x - 13 = 108 \\ 11x = 108 + 13 \\ 11x = 121 \\ x = 121 \div 11 \\x = 11$