9-(2m-3)=20-4m

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Solution for 9-(2m-3)=20-4m equation: 


Simplifying
9 + -1(2m + -3) = 20 + -4m

Reorder the terms:
9 + -1(-3 + 2m) = 20 + -4m
9 + (-3 * -1 + 2m * -1) = 20 + -4m
9 + (3 + -2m) = 20 + -4m

Combine like terms: 9 + 3 = 12
12 + -2m = 20 + -4m

Solving
12 + -2m = 20 + -4m

Solving for variable 'm'.

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

Add '4m' to each side of the equation.
12 + -2m + 4m = 20 + -4m + 4m

Combine like terms: -2m + 4m = 2m
12 + 2m = 20 + -4m + 4m

Combine like terms: -4m + 4m = 0
12 + 2m = 20 + 0
12 + 2m = 20

Add '-12' to each side of the equation.
12 + -12 + 2m = 20 + -12

Combine like terms: 12 + -12 = 0
0 + 2m = 20 + -12
2m = 20 + -12

Combine like terms: 20 + -12 = 8
2m = 8

Divide each side by '2'.
m = 4

Simplifying
m = 4

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