n*5+(70-n)*6.5=410

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Solution for n*5+(70-n)*6.5=410 equation: 



n*5+(70-n)*6.5=410

We move all terms to the left:

n*5+(70-n)*6.5-(410)=0

We add all the numbers together, and all the variables

n*5+(-1n+70)*6.5-410=0

We multiply parentheses

n*5-6.5n+455-410=0

Wy multiply elements

5n-6.5n+455-410=0

We add all the numbers together, and all the variables

-1.5n+45=0

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

-1.5n=-45

n=-45/-1.5

n=+30

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