20-3(m-4)=-4

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Solution for 20-3(m-4)=-4 equation: 


Simplifying
20 + -3(m + -4) = -4

Reorder the terms:
20 + -3(-4 + m) = -4
20 + (-4 * -3 + m * -3) = -4
20 + (12 + -3m) = -4

Combine like terms: 20 + 12 = 32
32 + -3m = -4

Solving
32 + -3m = -4

Solving for variable 'm'.

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

Add '-32' to each side of the equation.
32 + -32 + -3m = -4 + -32

Combine like terms: 32 + -32 = 0
0 + -3m = -4 + -32
-3m = -4 + -32

Combine like terms: -4 + -32 = -36
-3m = -36

Divide each side by '-3'.
m = 12

Simplifying
m = 12

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