10-7n=-9n

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Solution for 10-7n=-9n equation: 



10-7n=-9n

We move all terms to the left:

10-7n-(-9n)=0

We get rid of parentheses

-7n+9n+10=0

We add all the numbers together, and all the variables

2n+10=0

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

2n=-10

n=-10/2

n=-5

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