Question

+15-9x =5x +64
Me ajudem!
Valeu!

Answer 1

15 - 64 = 5x + 9x
-49 = 14x
x = -3,5

Answer 2

Olá!

$15 - 9x = 5x + 64 \\ - 9x - 5x = 64 - 15 \\ - 14x = 49 \\ 14x = - 49 \\ \\ x = \frac{ - 49}{14}$