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-13=-11+k/13
We move all terms to the left:
-13-(-11+k/13)=0
We add all the numbers together, and all the variables
-(k/13-11)-13=0
We get rid of parentheses
-k/13+11-13=0
We multiply all the terms by the denominator
-k+11*13-13*13=0
We add all the numbers together, and all the variables
-1k-26=0
We move all terms containing k to the left, all other terms to the right
-k=26
k=26/-1
k=-26
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