3(x-7)=9(3-x)

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Solution for 3(x-7)=9(3-x) equation: 



3(x-7)=9(3-x)

We move all terms to the left:

3(x-7)-(9(3-x))=0

We add all the numbers together, and all the variables

3(x-7)-(9(-1x+3))=0

We multiply parentheses

3x-(9(-1x+3))-21=0



We calculate terms in parentheses: -(9(-1x+3)), so:

9(-1x+3)

We multiply parentheses

-9x+27

Back to the equation:

-(-9x+27)



We get rid of parentheses

3x+9x-27-21=0

We add all the numbers together, and all the variables

12x-48=0

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

12x=48

x=48/12

x=4

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