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5n-7(n+4)+2n=-25
We move all terms to the left:
5n-7(n+4)+2n-(-25)=0
We add all the numbers together, and all the variables
7n-7(n+4)+25=0
We multiply parentheses
7n-7n-28+25=0
We add all the numbers together, and all the variables
-3!=0
There is no solution for this equation
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