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7/9k-4=4/9k+8
We move all terms to the left:
7/9k-4-(4/9k+8)=0
Domain of the equation: 9k!=0
k!=0/9
k!=0
k∈R
Domain of the equation: 9k+8)!=0We get rid of parentheses
k∈R
7/9k-4/9k-8-4=0
We multiply all the terms by the denominator
-8*9k-4*9k+7-4=0
We add all the numbers together, and all the variables
-8*9k-4*9k+3=0
Wy multiply elements
-72k-36k+3=0
We add all the numbers together, and all the variables
-108k+3=0
We move all terms containing k to the left, all other terms to the right
-108k=-3
k=-3/-108
k=1/36
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