Question

x sobre 2 - x sobre 3+40=2 sobre 5

Answer 1

$\frac{x}{2} - \frac{x}{3} + 40 = \frac{2}{5}$

mmc(2,3,5)=30

$15x - 10x + 1200 = 12 \\ 5x = 12 - 1200 \\ 5x = - 1188 \\ x = - \frac{1188}{5} = - 237.6$