7(m-1)+20=5(m+3)-15

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Solution for 7(m-1)+20=5(m+3)-15 equation:


Simplifying
7(m + -1) + 20 = 5(m + 3) + -15

Reorder the terms:
7(-1 + m) + 20 = 5(m + 3) + -15
(-1 * 7 + m * 7) + 20 = 5(m + 3) + -15
(-7 + 7m) + 20 = 5(m + 3) + -15

Reorder the terms:
-7 + 20 + 7m = 5(m + 3) + -15

Combine like terms: -7 + 20 = 13
13 + 7m = 5(m + 3) + -15

Reorder the terms:
13 + 7m = 5(3 + m) + -15
13 + 7m = (3 * 5 + m * 5) + -15
13 + 7m = (15 + 5m) + -15

Reorder the terms:
13 + 7m = 15 + -15 + 5m

Combine like terms: 15 + -15 = 0
13 + 7m = 0 + 5m
13 + 7m = 5m

Solving
13 + 7m = 5m

Solving for variable 'm'.

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

Add '-5m' to each side of the equation.
13 + 7m + -5m = 5m + -5m

Combine like terms: 7m + -5m = 2m
13 + 2m = 5m + -5m

Combine like terms: 5m + -5m = 0
13 + 2m = 0

Add '-13' to each side of the equation.
13 + -13 + 2m = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 2m = 0 + -13
2m = 0 + -13

Combine like terms: 0 + -13 = -13
2m = -13

Divide each side by '2'.
m = -6.5

Simplifying
m = -6.5

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