3t+21=9

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Solution for 3t+21=9 equation:



3t+21=9
We move all terms to the left:
3t+21-(9)=0
We add all the numbers together, and all the variables
3t+12=0
We move all terms containing t to the left, all other terms to the right
3t=-12
t=-12/3
t=-4

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