16m-21=3(4m+5)

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Solution for 16m-21=3(4m+5) equation:


Simplifying
16m + -21 = 3(4m + 5)

Reorder the terms:
-21 + 16m = 3(4m + 5)

Reorder the terms:
-21 + 16m = 3(5 + 4m)
-21 + 16m = (5 * 3 + 4m * 3)
-21 + 16m = (15 + 12m)

Solving
-21 + 16m = 15 + 12m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-12m' to each side of the equation.
-21 + 16m + -12m = 15 + 12m + -12m

Combine like terms: 16m + -12m = 4m
-21 + 4m = 15 + 12m + -12m

Combine like terms: 12m + -12m = 0
-21 + 4m = 15 + 0
-21 + 4m = 15

Add '21' to each side of the equation.
-21 + 21 + 4m = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 4m = 15 + 21
4m = 15 + 21

Combine like terms: 15 + 21 = 36
4m = 36

Divide each side by '4'.
m = 9

Simplifying
m = 9

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