3m-4=7m-20

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Solution for 3m-4=7m-20 equation:


Simplifying
3m + -4 = 7m + -20

Reorder the terms:
-4 + 3m = 7m + -20

Reorder the terms:
-4 + 3m = -20 + 7m

Solving
-4 + 3m = -20 + 7m

Solving for variable 'm'.

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

Add '-7m' to each side of the equation.
-4 + 3m + -7m = -20 + 7m + -7m

Combine like terms: 3m + -7m = -4m
-4 + -4m = -20 + 7m + -7m

Combine like terms: 7m + -7m = 0
-4 + -4m = -20 + 0
-4 + -4m = -20

Add '4' to each side of the equation.
-4 + 4 + -4m = -20 + 4

Combine like terms: -4 + 4 = 0
0 + -4m = -20 + 4
-4m = -20 + 4

Combine like terms: -20 + 4 = -16
-4m = -16

Divide each side by '-4'.
m = 4

Simplifying
m = 4

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