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128=-30n+3
We move all terms to the left:
128-(-30n+3)=0
We get rid of parentheses
30n-3+128=0
We add all the numbers together, and all the variables
30n+125=0
We move all terms containing n to the left, all other terms to the right
30n=-125
n=-125/30
n=-4+1/6
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