Question

18,7 + X+ 2X/3 + 2,3 = 50

a)14
b)13
c)12
d)29
e)10

Answer 1

Nenhuma das respostas anteriores.

$18.7\:+\:x+\:\dfrac{2x}{3}\:+\:2.3\:=\:50\\\\\\ x+\dfrac{2x}{3}+21=50\\\\\\ \dfrac{3x+2x}{3}=50-21\\\\\\ 5x = 29 \cdot 3\\\\\\ x = \dfrac{87}{5} = 17,4$