13 = -7 + 9x - 5x
X =
![13 7 9x 5x X class=](https://us-static.z-dn.net/files/d65/c1063e97abb0c567108b988d4cf9ac8c.png)
Answer:
x = 5
Step-by-step explanation:
Given
13 = - 7 + 9x - 5x , that is
13 = - 7 + 4x ( add 7 to both sides )
20 = 4x ( divide both sides by 4 )
5 = x