13t-9=-5(-4t-15)

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Solution for 13t-9=-5(-4t-15) equation: 



13t-9=-5(-4t-15)

We move all terms to the left:

13t-9-(-5(-4t-15))=0



We calculate terms in parentheses: -(-5(-4t-15)), so:

-5(-4t-15)

We multiply parentheses

20t+75

Back to the equation:

-(20t+75)



We get rid of parentheses

13t-20t-75-9=0

We add all the numbers together, and all the variables

-7t-84=0

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

-7t=84

t=84/-7

t=-12

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