18-4n=21

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Solution for 18-4n=21 equation:



18-4n=21
We move all terms to the left:
18-4n-(21)=0
We add all the numbers together, and all the variables
-4n-3=0
We move all terms containing n to the left, all other terms to the right
-4n=3
n=3/-4
n=-3/4

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