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2.5(k-7.5)=56.25
We move all terms to the left:
2.5(k-7.5)-(56.25)=0
We add all the numbers together, and all the variables
2.5(k-7.5)-56.25=0
We multiply parentheses
2.5k-18.75-56.25=0
We add all the numbers together, and all the variables
2.5k-75=0
We move all terms containing k to the left, all other terms to the right
2.5k=75
k=75/2.5
k=30
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