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3.50+2n=10.50
We move all terms to the left:
3.50+2n-(10.50)=0
We add all the numbers together, and all the variables
2n+3.50-(10.5)=0
We add all the numbers together, and all the variables
2n-7=0
We move all terms containing n to the left, all other terms to the right
2n=7
n=7/2
n=3+1/2
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