"Combine like terms" means you have to join 2 or more similar terms into one term. Doing this can simplify an equation or expression. For example, 10x+3+7x 10x and 7x are like terms. Therefore, the...
sample problem 9b + 3a - a + 6+ 2b + 4 terms would be each number or number plus a variable separated by an operation symbol (+ or -) like terms would be 9b and 2b, 3a and -a, and 6 and 4 simply add...
Like terms are terms that have the same variable, so you can add them together. 2x+3x=10. Since 2x and 3x have the same variable, 2x+3x=5x. Numbers without variables count as like terms.