4*n+5*n+2=280

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Solution for 4*n+5*n+2=280 equation: 



4*n+5*n+2=280

We move all terms to the left:

4*n+5*n+2-(280)=0

We add all the numbers together, and all the variables

9n-278=0

We move all terms containing n to the left, all other terms to the right

9n=278

n=278/9

n=30+8/9

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