Answer:
x = 2
Step-by-step explanation:
5(7-x) = 31-x
You have to open the parenthesis on the left side so the new equation becomes:
35-5x = 31-x
now you have to move the numbers to one side and and variables to another so:
-5x+x = 31 - 35
-4x = -4
x = 1
