3t+3=21-3t

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Solution for 3t+3=21-3t equation: 



3t+3=21-3t

We move all terms to the left:

3t+3-(21-3t)=0

We add all the numbers together, and all the variables

3t-(-3t+21)+3=0

We get rid of parentheses

3t+3t-21+3=0

We add all the numbers together, and all the variables

6t-18=0

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

6t=18

t=18/6

t=3

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