20+t=-2t-1

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Solution for 20+t=-2t-1 equation: 



20+t=-2t-1

We move all terms to the left:

20+t-(-2t-1)=0

We get rid of parentheses

t+2t+1+20=0

We add all the numbers together, and all the variables

3t+21=0

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

3t=-21

t=-21/3

t=-7

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