t+9=3t-9

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Solution for t+9=3t-9 equation: 



t+9=3t-9

We move all terms to the left:

t+9-(3t-9)=0

We get rid of parentheses

t-3t+9+9=0

We add all the numbers together, and all the variables

-2t+18=0

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

-2t=-18

t=-18/-2

t=+9

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