7-(-t)=20

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Solution for 7-(-t)=20 equation: 



7-(-t)=20

We move all terms to the left:

7-(-t)-(20)=0

We add all the numbers together, and all the variables

-(-1t)+7-20=0

We add all the numbers together, and all the variables

-(-1t)-13=0

We get rid of parentheses

1t-13=0

We add all the numbers together, and all the variables

t-13=0

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

t=13

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