9=w-12

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Solution for 9=w-12 equation:


Simplifying
9 = w + -12

Reorder the terms:
9 = -12 + w

Solving
9 = -12 + w

Solving for variable 'w'.

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

Add '-1w' to each side of the equation.
9 + -1w = -12 + w + -1w

Combine like terms: w + -1w = 0
9 + -1w = -12 + 0
9 + -1w = -12

Add '-9' to each side of the equation.
9 + -9 + -1w = -12 + -9

Combine like terms: 9 + -9 = 0
0 + -1w = -12 + -9
-1w = -12 + -9

Combine like terms: -12 + -9 = -21
-1w = -21

Divide each side by '-1'.
w = 21

Simplifying
w = 21

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