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8(13-k)=4(2k-2)
We move all terms to the left:
8(13-k)-(4(2k-2))=0
We add all the numbers together, and all the variables
8(-1k+13)-(4(2k-2))=0
We multiply parentheses
-8k-(4(2k-2))+104=0
We calculate terms in parentheses: -(4(2k-2)), so:We get rid of parentheses
4(2k-2)
We multiply parentheses
8k-8
Back to the equation:
-(8k-8)
-8k-8k+8+104=0
We add all the numbers together, and all the variables
-16k+112=0
We move all terms containing k to the left, all other terms to the right
-16k=-112
k=-112/-16
k=+7
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