45=-3(21-m)+3(m-2)

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Solution for 45=-3(21-m)+3(m-2) equation:


Simplifying
45 = -3(21 + -1m) + 3(m + -2)
45 = (21 * -3 + -1m * -3) + 3(m + -2)
45 = (-63 + 3m) + 3(m + -2)

Reorder the terms:
45 = -63 + 3m + 3(-2 + m)
45 = -63 + 3m + (-2 * 3 + m * 3)
45 = -63 + 3m + (-6 + 3m)

Reorder the terms:
45 = -63 + -6 + 3m + 3m

Combine like terms: -63 + -6 = -69
45 = -69 + 3m + 3m

Combine like terms: 3m + 3m = 6m
45 = -69 + 6m

Solving
45 = -69 + 6m

Solving for variable 'm'.

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

Add '-6m' to each side of the equation.
45 + -6m = -69 + 6m + -6m

Combine like terms: 6m + -6m = 0
45 + -6m = -69 + 0
45 + -6m = -69

Add '-45' to each side of the equation.
45 + -45 + -6m = -69 + -45

Combine like terms: 45 + -45 = 0
0 + -6m = -69 + -45
-6m = -69 + -45

Combine like terms: -69 + -45 = -114
-6m = -114

Divide each side by '-6'.
m = 19

Simplifying
m = 19

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