21t=19t+7

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Solution for 21t=19t+7 equation: 



21t=19t+7

We move all terms to the left:

21t-(19t+7)=0

We get rid of parentheses

21t-19t-7=0

We add all the numbers together, and all the variables

2t-7=0

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

2t=7

t=7/2

t=3+1/2

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