12m-7(m+3)=9+8(m+3)

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Solution for 12m-7(m+3)=9+8(m+3) equation:


Simplifying
12m + -7(m + 3) = 9 + 8(m + 3)

Reorder the terms:
12m + -7(3 + m) = 9 + 8(m + 3)
12m + (3 * -7 + m * -7) = 9 + 8(m + 3)
12m + (-21 + -7m) = 9 + 8(m + 3)

Reorder the terms:
-21 + 12m + -7m = 9 + 8(m + 3)

Combine like terms: 12m + -7m = 5m
-21 + 5m = 9 + 8(m + 3)

Reorder the terms:
-21 + 5m = 9 + 8(3 + m)
-21 + 5m = 9 + (3 * 8 + m * 8)
-21 + 5m = 9 + (24 + 8m)

Combine like terms: 9 + 24 = 33
-21 + 5m = 33 + 8m

Solving
-21 + 5m = 33 + 8m

Solving for variable 'm'.

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

Add '-8m' to each side of the equation.
-21 + 5m + -8m = 33 + 8m + -8m

Combine like terms: 5m + -8m = -3m
-21 + -3m = 33 + 8m + -8m

Combine like terms: 8m + -8m = 0
-21 + -3m = 33 + 0
-21 + -3m = 33

Add '21' to each side of the equation.
-21 + 21 + -3m = 33 + 21

Combine like terms: -21 + 21 = 0
0 + -3m = 33 + 21
-3m = 33 + 21

Combine like terms: 33 + 21 = 54
-3m = 54

Divide each side by '-3'.
m = -18

Simplifying
m = -18

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