Evaluating expressions means that you’ll be replacing or “plugging in” numbers for variables and then simplifying using the order of operations until you arrive at a single number. Sometimes you’ll be able to plug in the numbers without issue, but there are other times (when there’s multiplication, exponents, or when plugging in a negative number) where you’ll need to plug in the numbers using parentheses.
Read MoreTwo-step problems are problems in which you need to not only solve an equation for the value of a variable, but then also use the solution to evaluate some other expression that depends on that same variable.
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