-21=45+t

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Solution for -21=45+t equation: 



-21=45+t

We move all terms to the left:

-21-(45+t)=0

We add all the numbers together, and all the variables

-(t+45)-21=0

We get rid of parentheses

-t-45-21=0

We add all the numbers together, and all the variables

-1t-66=0

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

-t=66

t=66/-1

t=-66

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