-10(7n+2)=-10(9n+4)

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Solution for -10(7n+2)=-10(9n+4) equation: 



-10(7n+2)=-10(9n+4)

We move all terms to the left:

-10(7n+2)-(-10(9n+4))=0

We multiply parentheses

-70n-(-10(9n+4))-20=0



We calculate terms in parentheses: -(-10(9n+4)), so:

-10(9n+4)

We multiply parentheses

-90n-40

Back to the equation:

-(-90n-40)



We get rid of parentheses

-70n+90n+40-20=0

We add all the numbers together, and all the variables

20n+20=0

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

20n=-20

n=-20/20

n=-1

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