t+21=2(t-10)

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Solution for t+21=2(t-10) equation: 



t+21=2(t-10)

We move all terms to the left:

t+21-(2(t-10))=0



We calculate terms in parentheses: -(2(t-10)), so:

2(t-10)

We multiply parentheses

2t-20

Back to the equation:

-(2t-20)



We get rid of parentheses

t-2t+20+21=0

We add all the numbers together, and all the variables

-1t+41=0

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

-t=-41

t=-41/-1

t=+41

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