(-20)-(-4m)=(-5m)-(-15)

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Solution for (-20)-(-4m)=(-5m)-(-15) equation:


Simplifying
(-20) + -1(-4m) = (-5m) + -1(-15)
-20 + -1(-4m) = (-5m) + -1(-15)

Remove parenthesis around (-4m)
-20 + -1 * -4m = (-5m) + -1(-15)

Multiply -1 * -4
-20 + 4m = (-5m) + -1(-15)

Multiply -1 * -15
-20 + 4m = (-5m) + 15

Reorder the terms:
-20 + 4m = 15 + (-5m)

Solving
-20 + 4m = 15 + (-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.
-20 + 4m + (5m) = 15 + (-5m) + (5m)

Combine like terms: 4m + (5m) = 9m
-20 + 9m = 15 + (-5m) + (5m)

Combine like terms: (-5m) + (5m) = 0
-20 + 9m = 15 + 0
-20 + 9m = 15

Add '20' to each side of the equation.
-20 + 20 + 9m = 15 + 20

Combine like terms: -20 + 20 = 0
0 + 9m = 15 + 20
9m = 15 + 20

Combine like terms: 15 + 20 = 35
9m = 35

Divide each side by '9'.
m = 3.888888889

Simplifying
m = 3.888888889

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