Question

How do I simplify an expression

Answer 1

Do Parenthesis
Exponents [brackets]
Multiplication
Division
Addition
Subtraction

do PEMDAS in order.

you also need to do what comes first
so if in the expression subtraction comes before addition you do subtraction first. If division comes before multiplication do division first even though multiplication comes first in PEMDAS

Answer 2

Start with parentheses first
Afterwards do exponents
Next do either multiplication or division (L to R)
Then Addition and Subtraction (L to R)
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Then solve to find your answer