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-43=7w-15-5w
We move all terms to the left:
-43-(7w-15-5w)=0
We add all the numbers together, and all the variables
-(2w-15)-43=0
We get rid of parentheses
-2w+15-43=0
We add all the numbers together, and all the variables
-2w-28=0
We move all terms containing w to the left, all other terms to the right
-2w=28
w=28/-2
w=-14
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