-9=12+w

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Solution for -9=12+w equation:


Simplifying
-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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