-4(5m+20)=-400

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Solution for -4(5m+20)=-400 equation: 


Simplifying
-4(5m + 20) = -400

Reorder the terms:
-4(20 + 5m) = -400
(20 * -4 + 5m * -4) = -400
(-80 + -20m) = -400

Solving
-80 + -20m = -400

Solving for variable 'm'.

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

Add '80' to each side of the equation.
-80 + 80 + -20m = -400 + 80

Combine like terms: -80 + 80 = 0
0 + -20m = -400 + 80
-20m = -400 + 80

Combine like terms: -400 + 80 = -320
-20m = -320

Divide each side by '-20'.
m = 16

Simplifying
m = 16

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