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-3+4(5-5k)=-83
We move all terms to the left:
-3+4(5-5k)-(-83)=0
We add all the numbers together, and all the variables
4(-5k+5)-3-(-83)=0
We add all the numbers together, and all the variables
4(-5k+5)+80=0
We multiply parentheses
-20k+20+80=0
We add all the numbers together, and all the variables
-20k+100=0
We move all terms containing k to the left, all other terms to the right
-20k=-100
k=-100/-20
k=+5
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