3(m-1)+6=21

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Solution for 3(m-1)+6=21 equation:


Simplifying
3(m + -1) + 6 = 21

Reorder the terms:
3(-1 + m) + 6 = 21
(-1 * 3 + m * 3) + 6 = 21
(-3 + 3m) + 6 = 21

Reorder the terms:
-3 + 6 + 3m = 21

Combine like terms: -3 + 6 = 3
3 + 3m = 21

Solving
3 + 3m = 21

Solving for variable 'm'.

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

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

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

Combine like terms: 21 + -3 = 18
3m = 18

Divide each side by '3'.
m = 6

Simplifying
m = 6

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