Question

resolução x/2+x/3=(x+7)/3

Answer 1

$\frac{x}{2}+\frac{x}{3}=\frac{x+7}{3}\\ \\ 3x+2x=2(x+7)\\ \\ 3x+2x=2x+14\\ \\ 3x=14\\ \\ x=\frac{14}{3}$

Answer 2

$\dfrac{x}{2} + \dfrac{x}{3} = \dfrac{x + 7}{3} \\ \\ \\ \dfrac{3x + 2x}{6} - \dfrac{x + 7}{3} = 0 \\ \\ \\ \dfrac{5x - 2x - 14}{6} = 0 \\ \\ \\ 3x - 14 = 0 \\ \\ \\ 3x = 14 \\ \\ \\ => x = \dfrac{14}{3}$