12=4(2m+5)

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Solution for 12=4(2m+5) equation:


Simplifying
12 = 4(2m + 5)

Reorder the terms:
12 = 4(5 + 2m)
12 = (5 * 4 + 2m * 4)
12 = (20 + 8m)

Solving
12 = 20 + 8m

Solving for variable 'm'.

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

Add '-8m' to each side of the equation.
12 + -8m = 20 + 8m + -8m

Combine like terms: 8m + -8m = 0
12 + -8m = 20 + 0
12 + -8m = 20

Add '-12' to each side of the equation.
12 + -12 + -8m = 20 + -12

Combine like terms: 12 + -12 = 0
0 + -8m = 20 + -12
-8m = 20 + -12

Combine like terms: 20 + -12 = 8
-8m = 8

Divide each side by '-8'.
m = -1

Simplifying
m = -1

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