Question

Розв‘яжи рівняння x/3–x+1/4=4x-9/12

Answer 1

$\frac{x}{3} - \frac{x + 1}{4} = \frac{4x - 9}{12} \: \: \: | \times 12 \\ 4x - 3(x + 1) = 4x - 9 \\ 4x - 3x - 3 - 4x = - 9 \\ - 3x = - 9 + 3 \\ - 3x = - 6 \\ 3x = 6 \\ x = 6 \div 3 \\ x = 2$