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45=7w-3
We move all terms to the left:
45-(7w-3)=0
We get rid of parentheses
-7w+3+45=0
We add all the numbers together, and all the variables
-7w+48=0
We move all terms containing w to the left, all other terms to the right
-7w=-48
w=-48/-7
w=6+6/7
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