-3w+9=-18

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Solution for -3w+9=-18 equation: 


Simplifying
-3w + 9 = -18

Reorder the terms:
9 + -3w = -18

Solving
9 + -3w = -18

Solving for variable 'w'.

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

Add '-9' to each side of the equation.
9 + -9 + -3w = -18 + -9

Combine like terms: 9 + -9 = 0
0 + -3w = -18 + -9
-3w = -18 + -9

Combine like terms: -18 + -9 = -27
-3w = -27

Divide each side by '-3'.
w = 9

Simplifying
w = 9

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