8m-7=4m+21

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Solution for 8m-7=4m+21 equation:


Simplifying
8m + -7 = 4m + 21

Reorder the terms:
-7 + 8m = 4m + 21

Reorder the terms:
-7 + 8m = 21 + 4m

Solving
-7 + 8m = 21 + 4m

Solving for variable 'm'.

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

Add '-4m' to each side of the equation.
-7 + 8m + -4m = 21 + 4m + -4m

Combine like terms: 8m + -4m = 4m
-7 + 4m = 21 + 4m + -4m

Combine like terms: 4m + -4m = 0
-7 + 4m = 21 + 0
-7 + 4m = 21

Add '7' to each side of the equation.
-7 + 7 + 4m = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 4m = 21 + 7
4m = 21 + 7

Combine like terms: 21 + 7 = 28
4m = 28

Divide each side by '4'.
m = 7

Simplifying
m = 7

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