Variable expressions

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Variable expressions

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Evaluate single-variable expressions

Evaluate the expression 2+h for h = 15.

Plug in h=15 and simplify

2+h
2+15	Plug in h=15
17	Add

Evaluate the expression -2-3m for m=-1.

Plug in m=-1 and simplify

-2-3m
-2-3(-1)	Plug in m=-1
-2+3	Multiply
1	Subtract

Evaluate the expression -8a+9 for a=-4

Solution: -8a+9=