3w-7w=-28

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Solution for 3w-7w=-28 equation: 


Simplifying
3w + -7w = -28

Combine like terms: 3w + -7w = -4w
-4w = -28

Solving
-4w = -28

Solving for variable 'w'.

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

Divide each side by '-4'.
w = 7

Simplifying
w = 7

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