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19=2w-27
We move all terms to the left:
19-(2w-27)=0
We get rid of parentheses
-2w+27+19=0
We add all the numbers together, and all the variables
-2w+46=0
We move all terms containing w to the left, all other terms to the right
-2w=-46
w=-46/-2
w=+23
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