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-4/n=-9
We move all terms to the left:
-4/n-(-9)=0
Domain of the equation: n!=0We add all the numbers together, and all the variables
n∈R
-4/n+9=0
We multiply all the terms by the denominator
9*n-4=0
We add all the numbers together, and all the variables
9n-4=0
We move all terms containing n to the left, all other terms to the right
9n=4
n=4/9
n=4/9
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