Question

When you add or subtract numbers over sings do you flip them?

Answer 1

Say you have this problem.

4x=2x-4

First you would combine your like terms.

4x = 2x-4
-2x=-2x-4
---------------
2x=-4

Next you would divide

2x =-4
÷ -4 =-4
--------------
x = 0.5