Question

resolva as equaçoes 9 - x =2x​

Answer 1

Resposta:

-x -2x= -9

-3x = -9

x = 9:3

x = 3

Answer 2

9 -x= 2x

2x -x = -9

-3x = -9

3x = 9

x= $\frac{9}{3}$

x = 3