Question 1002060
A. what operation is performed?


1. x-8=2x


subtract x from both sides of the equation to get:
x - x - 8 = 2x - x
combine like terms to get:
-8 = x
confirm by replacing x with -8 to get -8-8 = 2(-8) which becomes -16 = -16 which confirms the solution is correct.


2. x+8=2x


subtract x from both sides of the equation to get:|
x - x + 8 = 2x - x
combine like terms to get:
8 = x
confirm by replacing x with 8 to get 8+8 = 2(8) which becomes 16 = 16 which confirms the solution is correct.



B.solve each equation


3. x+3=9


subtract 3 from both sides of the equation to get:
x + 3 - 3 = 9 - 3
combine like terms to get:
x = 6
confirm by replacing x with 6 to get 6 + 3 = 9 which becomes 9 = 9 which confirms the solution is correct.



4. x-4=4 


add 4 to both sides of the equation to get:
x - 4 + 4 = 4 + 4
combine like terms to get:
x = 8
confirm by replacing x with 8 to get 8-4 = 4 which becomes 4 = 4 which confirms the solution is correct.