W+W+3W-12+3W-12=640

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Solution for W+W+3W-12+3W-12=640 equation: 


Simplifying
W + W + 3W + -12 + 3W + -12 = 640

Reorder the terms:
-12 + -12 + W + W + 3W + 3W = 640

Combine like terms: -12 + -12 = -24
-24 + W + W + 3W + 3W = 640

Combine like terms: W + W = 2W
-24 + 2W + 3W + 3W = 640

Combine like terms: 2W + 3W = 5W
-24 + 5W + 3W = 640

Combine like terms: 5W + 3W = 8W
-24 + 8W = 640

Solving
-24 + 8W = 640

Solving for variable 'W'.

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

Add '24' to each side of the equation.
-24 + 24 + 8W = 640 + 24

Combine like terms: -24 + 24 = 0
0 + 8W = 640 + 24
8W = 640 + 24

Combine like terms: 640 + 24 = 664
8W = 664

Divide each side by '8'.
W = 83

Simplifying
W = 83

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