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(7n-5)=149
We move all terms to the left:
(7n-5)-(149)=0
We get rid of parentheses
7n-5-149=0
We add all the numbers together, and all the variables
7n-154=0
We move all terms containing n to the left, all other terms to the right
7n=154
n=154/7
n=22
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