The goal of all algebra equations is to isolate the variable. In 3 step you should first make sure both variables are on the same side. To do that make sure you use the inverse. For example: 6a + 9 = 3a + 15 because 3a is positive you're going to want to subtract it. 6a + 6 = 3a + 15 -3a -3a _______________ 3a + 6 = 15
Now it's a 2 step equation and you solve it on from there.
