7t+13t=-20

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Solution for 7t+13t=-20 equation: 



7t+13t=-20

We move all terms to the left:

7t+13t-(-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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