-9=3(t-7)-6t

Solution for -9=3(t-7)-6t equation:

-9=3(t-7)-6t

We move all terms to the left:

-9-(3(t-7)-6t)=0


We calculate terms in parentheses: -(3(t-7)-6t), so:

3(t-7)-6t

We add all the numbers together, and all the variables

-6t+3(t-7)

We multiply parentheses

-6t+3t-21

We add all the numbers together, and all the variables

-3t-21

Back to the equation:

-(-3t-21)


We get rid of parentheses

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