-10(t-9)=20

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Solution for -10(t-9)=20 equation: 



-10(t-9)=20

We move all terms to the left:

-10(t-9)-(20)=0

We multiply parentheses

-10t+90-20=0

We add all the numbers together, and all the variables

-10t+70=0

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

-10t=-70

t=-70/-10

t=+7

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