7t+21=3(t+5)

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Solution for 7t+21=3(t+5) equation: 



7t+21=3(t+5)

We move all terms to the left:

7t+21-(3(t+5))=0



We calculate terms in parentheses: -(3(t+5)), so:

3(t+5)

We multiply parentheses

3t+15

Back to the equation:

-(3t+15)



We get rid of parentheses

7t-3t-15+21=0

We add all the numbers together, and all the variables

4t+6=0

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

4t=-6

t=-6/4

t=-1+1/2

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