Question

Решите уравнение. x/3+x/4=7

Answer 1

$displaystyle frac{x}{3} + frac{x}{4} =7quad bigg|cdot 12\\12left( frac{x}{3} + frac{x}{4} right)=84\\4x+3x=84\\7x=84quad bigg|:7\\boxed{x=12}$