4.5t-1.5t=21

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Solution for 4.5t-1.5t=21 equation: 



4.5t-1.5t=21

We move all terms to the left:

4.5t-1.5t-(21)=0

We add all the numbers together, and all the variables

3t-21=0

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

3t=21

t=21/3

t=7

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