2(3+4m)-9=5(9-3m)+21

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Solution for 2(3+4m)-9=5(9-3m)+21 equation:


Simplifying
2(3 + 4m) + -9 = 5(9 + -3m) + 21
(3 * 2 + 4m * 2) + -9 = 5(9 + -3m) + 21
(6 + 8m) + -9 = 5(9 + -3m) + 21

Reorder the terms:
6 + -9 + 8m = 5(9 + -3m) + 21

Combine like terms: 6 + -9 = -3
-3 + 8m = 5(9 + -3m) + 21
-3 + 8m = (9 * 5 + -3m * 5) + 21
-3 + 8m = (45 + -15m) + 21

Reorder the terms:
-3 + 8m = 45 + 21 + -15m

Combine like terms: 45 + 21 = 66
-3 + 8m = 66 + -15m

Solving
-3 + 8m = 66 + -15m

Solving for variable 'm'.

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

Add '15m' to each side of the equation.
-3 + 8m + 15m = 66 + -15m + 15m

Combine like terms: 8m + 15m = 23m
-3 + 23m = 66 + -15m + 15m

Combine like terms: -15m + 15m = 0
-3 + 23m = 66 + 0
-3 + 23m = 66

Add '3' to each side of the equation.
-3 + 3 + 23m = 66 + 3

Combine like terms: -3 + 3 = 0
0 + 23m = 66 + 3
23m = 66 + 3

Combine like terms: 66 + 3 = 69
23m = 69

Divide each side by '23'.
m = 3

Simplifying
m = 3

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