Question

Use the expression (8x+2) + (-9x+7). Explain how you know when to combine terms with variables

Answer 1

the answer to this would be -x+9

Explanation:

You can note that, when combining like terms, we only add the coefficients of the terms. On the other hand, unlike terms are terms that do not have identical variables and exponents. For example, an expression 4x + 9y contains terms because variables x and y are different and are not raised to the same power.