Question

Equação. x sobre 3 + x sobre 2 = 15

Answer 1

$\frac{x}{3} + \frac{x}{2} =15\\\\ mmc=6\\\\ \frac{2x+3x}{6} = \frac{90}{6} \to \\\\ 2x+3x=90\to \\\\ 5x=90\to \\\\ x= \frac{90}{5} \to \\\\ x=18$

Answer 2

x/3 + x/2 = 15/1

2x/6 +3x/6 = 90/6

5x=90
x=18