-4(3M-8)+13(M-4)=15-8

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Solution for -4(3M-8)+13(M-4)=15-8 equation: 


Simplifying
-4(3M + -8) + 13(M + -4) = 15 + -8

Reorder the terms:
-4(-8 + 3M) + 13(M + -4) = 15 + -8
(-8 * -4 + 3M * -4) + 13(M + -4) = 15 + -8
(32 + -12M) + 13(M + -4) = 15 + -8

Reorder the terms:
32 + -12M + 13(-4 + M) = 15 + -8
32 + -12M + (-4 * 13 + M * 13) = 15 + -8
32 + -12M + (-52 + 13M) = 15 + -8

Reorder the terms:
32 + -52 + -12M + 13M = 15 + -8

Combine like terms: 32 + -52 = -20
-20 + -12M + 13M = 15 + -8

Combine like terms: -12M + 13M = 1M
-20 + 1M = 15 + -8

Combine like terms: 15 + -8 = 7
-20 + 1M = 7

Solving
-20 + 1M = 7

Solving for variable 'M'.

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

Add '20' to each side of the equation.
-20 + 20 + 1M = 7 + 20

Combine like terms: -20 + 20 = 0
0 + 1M = 7 + 20
1M = 7 + 20

Combine like terms: 7 + 20 = 27
1M = 27

Divide each side by '1'.
M = 27

Simplifying
M = 27

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