12w-7w=40

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Solution for 12w-7w=40 equation: 


Simplifying
12w + -7w = 40

Combine like terms: 12w + -7w = 5w
5w = 40

Solving
5w = 40

Solving for variable 'w'.

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

Divide each side by '5'.
w = 8

Simplifying
w = 8

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