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n*3/4=87
We move all terms to the left:
n*3/4-(87)=0
We multiply all the terms by the denominator
n*3-87*4=0
We add all the numbers together, and all the variables
n*3-348=0
Wy multiply elements
3n-348=0
We move all terms containing n to the left, all other terms to the right
3n=348
n=348/3
n=116
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