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3 years ago

4m + 9 + 5m - 12 = 42

Mathematics

2 answers:

MrRissso [65]3 years ago

4 0

4m+9+5m-12=42 is 5. m= 5.

Fiesta28 [93]3 years ago

3 0

First, combine like terms.

4m+5m = 9m

9m + 9 - 12 = 42

9-12= -3

9m - 3 = 42

Second, apply the inverse operation to isolate the variable.

9m - 3 = 42
+3 +3

9m = 45

Third, divide 9 by both sides to solve for m.

$\frac{9m}{9} = \frac{45}{9}$

m = 45/9

m = 5

Answer: $m = 5$

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