x-9=-3(x-20)

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Solution for x-9=-3(x-20) equation: 



x-9=-3(x-20)

We move all terms to the left:

x-9-(-3(x-20))=0



We calculate terms in parentheses: -(-3(x-20)), so:

-3(x-20)

We multiply parentheses

-3x+60

Back to the equation:

-(-3x+60)



We get rid of parentheses

x+3x-60-9=0

We add all the numbers together, and all the variables

4x-69=0

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

4x=69

x=69/4

x=17+1/4

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