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5k-13=-2(1-8k)
We move all terms to the left:
5k-13-(-2(1-8k))=0
We add all the numbers together, and all the variables
5k-(-2(-8k+1))-13=0
We calculate terms in parentheses: -(-2(-8k+1)), so:We get rid of parentheses
-2(-8k+1)
We multiply parentheses
16k-2
Back to the equation:
-(16k-2)
5k-16k+2-13=0
We add all the numbers together, and all the variables
-11k-11=0
We move all terms containing k to the left, all other terms to the right
-11k=11
k=11/-11
k=-1
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