3w-12=9

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Solution for 3w-12=9 equation: 


Simplifying
3w + -12 = 9

Reorder the terms:
-12 + 3w = 9

Solving
-12 + 3w = 9

Solving for variable 'w'.

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

Add '12' to each side of the equation.
-12 + 12 + 3w = 9 + 12

Combine like terms: -12 + 12 = 0
0 + 3w = 9 + 12
3w = 9 + 12

Combine like terms: 9 + 12 = 21
3w = 21

Divide each side by '3'.
w = 7

Simplifying
w = 7

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