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4(w+7)-7w=4
We move all terms to the left:
4(w+7)-7w-(4)=0
We add all the numbers together, and all the variables
-7w+4(w+7)-4=0
We multiply parentheses
-7w+4w+28-4=0
We add all the numbers together, and all the variables
-3w+24=0
We move all terms containing w to the left, all other terms to the right
-3w=-24
w=-24/-3
w=+8
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