3=12-w

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Solution for 3=12-w equation: 


Simplifying
3 = 12 + -1w

Solving
3 = 12 + -1w

Solving for variable 'w'.

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

Add 'w' to each side of the equation.
3 + w = 12 + -1w + w

Combine like terms: -1w + w = 0
3 + w = 12 + 0
3 + w = 12

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

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

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

Simplifying
w = 9

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