(3w-12)+(3w-12)+w+w=640

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Solution for (3w-12)+(3w-12)+w+w=640 equation: 



(3w-12)+(3w-12)+w+w=640

We move all terms to the left:

(3w-12)+(3w-12)+w+w-(640)=0

We add all the numbers together, and all the variables

2w+(3w-12)+(3w-12)-640=0

We get rid of parentheses

2w+3w+3w-12-12-640=0

We add all the numbers together, and all the variables

8w-664=0

We move all terms containing w to the left, all other terms to the right

8w=664

w=664/8

w=83

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