Question

x+2x-4=5?? me ajudem a resolver?

Answer 1

X+2X= 5+4
3X=9
X=9/3
X=3

Answer 2

$x + 2x - 4 = 5 \\ \\ 3x = 5 + 4 \\ \\ 3x = 9 \\ \\ x = \dfrac{9}{3} \\ \\ \\ \fbox{ x = 3 }$