5t+3t=21-4t

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Solution for 5t+3t=21-4t equation: 



5t+3t=21-4t

We move all terms to the left:

5t+3t-(21-4t)=0

We add all the numbers together, and all the variables

5t+3t-(-4t+21)=0

We add all the numbers together, and all the variables

8t-(-4t+21)=0

We get rid of parentheses

8t+4t-21=0

We add all the numbers together, and all the variables

12t-21=0

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

12t=21

t=21/12

t=1+3/4

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