# math

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i am trying to simplify this equation
4m+9+5m-12=42

• math -

combine the m terms on the left. Add 3 to both sides.

• math -

4m+9+5m-12=42

Reorder the terms:
9 + -12 + 4m + 5m = 42

Combine like terms: 9 + -12 = -3
-3 + 4m + 5m = 42

Combine like terms: 4m + 5m = 9m
-3 + 9m = 42

The above was taken from algebrahelp.com.

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