3(-5t)=21

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Solution for 3(-5t)=21 equation: 



3(-5t)=21

We move all terms to the left:

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

We multiply parentheses

-15t-21=0

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

-15t=21

t=21/-15

t=-1+2/5

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