The expression of a n is read a to the n th power Order of Operations When simplifying mathematical expressions perform the operations in the following order

Equality Symbol a = b is read as a is equal to b

expressions — An expression is a number, a variable, or a combination of numbers and variables and operation symbols. expression of a n — read a to the n th power. solution of an equation — A solution to an equation is a value of a variable that makes a true statement when substituted into the equation. The process of finding the solution to an equation is called…. like terms — Terms that are either constants or have the same variables with the same exponents are like terms.

Be able to determine whether a number is a solution to an equation. Step 1. Substitute the number for the variable in the equation; solve an equation using the Subtraction Property of Equality. Step 1. Use the Subtraction Property of Equality to isolate the variable; solve an equation using the Addition Property of Equality. Step 1. Use the Addition Property of Equality to isolate the variable.