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-125=4(1+8k)
We move all terms to the left:
-125-(4(1+8k))=0
We add all the numbers together, and all the variables
-(4(8k+1))-125=0
We calculate terms in parentheses: -(4(8k+1)), so:We get rid of parentheses
4(8k+1)
We multiply parentheses
32k+4
Back to the equation:
-(32k+4)
-32k-4-125=0
We add all the numbers together, and all the variables
-32k-129=0
We move all terms containing k to the left, all other terms to the right
-32k=129
k=129/-32
k=-4+1/32
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