3w+7+90+7w-7=180

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Solution for 3w+7+90+7w-7=180 equation: 



3w+7+90+7w-7=180

We move all terms to the left:

3w+7+90+7w-7-(180)=0

We add all the numbers together, and all the variables

10w-90=0

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

10w=90

w=90/10

w=9

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