-8t-13t-(-t)=20

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Solution for -8t-13t-(-t)=20 equation: 



-8t-13t-(-t)=20

We move all terms to the left:

-8t-13t-(-t)-(20)=0

We add all the numbers together, and all the variables

-8t-13t-(-1t)-20=0

We add all the numbers together, and all the variables

-21t-(-1t)-20=0

We get rid of parentheses

-21t+1t-20=0

We add all the numbers together, and all the variables

-20t-20=0

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

-20t=20

t=20/-20

t=-1

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