First, distribute the 5 into (x+10)
This leaves you with the equation 5x + 50 - 10x = 100
From there, combine 5x and -10x together since they have the same variable
This gives you 50 - 5x = 100
Now you subtract 50 from both sides to get the x by itself
Now you have -5x = 50
Divide both sides by -5
This leaves you with the final answer: x = -10
