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10-7w=13-7w+15
We move all terms to the left:
10-7w-(13-7w+15)=0
We add all the numbers together, and all the variables
-7w-(-7w+28)+10=0
We get rid of parentheses
-7w+7w-28+10=0
We add all the numbers together, and all the variables
-18!=0
There is no solution for this equation
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