7x-3(4-x)=9

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Solution for 7x-3(4-x)=9 equation: 



7x-3(4-x)=9

We move all terms to the left:

7x-3(4-x)-(9)=0

We add all the numbers together, and all the variables

7x-3(-1x+4)-9=0

We multiply parentheses

7x+3x-12-9=0

We add all the numbers together, and all the variables

10x-21=0

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

10x=21

x=21/10

x=2+1/10

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