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5-2n-7n=1-7
We move all terms to the left:
5-2n-7n-(1-7)=0
We add all the numbers together, and all the variables
-2n-7n+5-(-6)=0
We add all the numbers together, and all the variables
-9n+11=0
We move all terms containing n to the left, all other terms to the right
-9n=-11
n=-11/-9
n=1+2/9
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