7=9+t

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Solution for 7=9+t equation: 



7=9+t

We move all terms to the left:

7-(9+t)=0

We add all the numbers together, and all the variables

-(t+9)+7=0

We get rid of parentheses

-t-9+7=0

We add all the numbers together, and all the variables

-1t-2=0

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

-t=2

t=2/-1

t=-2

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