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4k+k/2=45
We move all terms to the left:
4k+k/2-(45)=0
We multiply all the terms by the denominator
4k*2+k-45*2=0
We add all the numbers together, and all the variables
k+4k*2-90=0
Wy multiply elements
k+8k-90=0
We add all the numbers together, and all the variables
9k-90=0
We move all terms containing k to the left, all other terms to the right
9k=90
k=90/9
k=10
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