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197=7-w
We move all terms to the left:
197-(7-w)=0
We add all the numbers together, and all the variables
-(-1w+7)+197=0
We get rid of parentheses
1w-7+197=0
We add all the numbers together, and all the variables
w+190=0
We move all terms containing w to the left, all other terms to the right
w=-190
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