4x + 2 = 10
4x + 2 - 2 = 10 - 2
4x = 8
4x/4 = 8/4
x = 2
In this problem, x can only be 2 because....
4 (2) + 2 = 10
8 + 2 = 10
4x + 10 = 2
4x + 10 - 10 = 2 - 10
4x = -8
4x/4 = -8/4
x = -2
In this problem, x can only be -2 because....
4 (-2) + 10 = 2
-8 + 10 = 2
-4x + 2 = 10
-4x + 2 -2 = 10 - 2
-4x = 8
-4x/-4 = 8 /-4
x = -2
In this problem, x can only be -2 because...
-4 (-2) + 2 = 10
8 + 2 = 10
