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-6(7+w)-8w=84
We move all terms to the left:
-6(7+w)-8w-(84)=0
We add all the numbers together, and all the variables
-6(w+7)-8w-84=0
We add all the numbers together, and all the variables
-8w-6(w+7)-84=0
We multiply parentheses
-8w-6w-42-84=0
We add all the numbers together, and all the variables
-14w-126=0
We move all terms containing w to the left, all other terms to the right
-14w=126
w=126/-14
w=-9
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