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4-2n/5=12
We move all terms to the left:
4-2n/5-(12)=0
We add all the numbers together, and all the variables
-2n/5-8=0
We multiply all the terms by the denominator
-2n-8*5=0
We add all the numbers together, and all the variables
-2n-40=0
We move all terms containing n to the left, all other terms to the right
-2n=40
n=40/-2
n=-20
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