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k-7/0.4=85
We move all terms to the left:
k-7/0.4-(85)=0
determiningTheFunctionDomain k-85-7/0.4=0
We multiply all the terms by the denominator
k*0.4-7-85*0.4=0
We add all the numbers together, and all the variables
k*0.4-41=0
Wy multiply elements
0.4k-41=0
We move all terms containing k to the left, all other terms to the right
0.4k=41
k=41/0.4
k=102+0.2/0.4
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