Combine Like Terms
Before you begin solving for a variable on a question on the GED math test, you might need to first simplify the equation by combining like terms. For example:
10n – 27 – 3n = 190
It will be much easier to solve for n once you combine the terms 10n and -3n. The way to do this is to subtract 3n from 10n, since it’s minus 3n.
You will need to get rid of parentheses in order to solve for a variable. If a number or variable is next to parentheses as in the example below, you need to multiply that number or variable by everything in the parentheses.
3(2n – 4) = 36