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n/5+5=21
We move all terms to the left:
n/5+5-(21)=0
We add all the numbers together, and all the variables
n/5-16=0
We multiply all the terms by the denominator
n-16*5=0
We add all the numbers together, and all the variables
n-80=0
We move all terms containing n to the left, all other terms to the right
n=80
| 6/x(3)=1 | | 4x=2=10 | | x-9/4=7(4) | | x-9/4=7x4 | | 5p=3p-4 | | x=9/4=7 |