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-2k-30=2(-5k+1)
We move all terms to the left:
-2k-30-(2(-5k+1))=0
We calculate terms in parentheses: -(2(-5k+1)), so:We get rid of parentheses
2(-5k+1)
We multiply parentheses
-10k+2
Back to the equation:
-(-10k+2)
-2k+10k-2-30=0
We add all the numbers together, and all the variables
8k-32=0
We move all terms containing k to the left, all other terms to the right
8k=32
k=32/8
k=4
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