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273=7-2n=3
We move all terms to the left:
273-(7-2n)=0
We add all the numbers together, and all the variables
-(-2n+7)+273=0
We get rid of parentheses
2n-7+273=0
We add all the numbers together, and all the variables
2n+266=0
We move all terms containing n to the left, all other terms to the right
2n=-266
n=-266/2
n=-133
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