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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

12x-(4(x+7))-4=0



We calculate terms in parentheses: -(4(x+7)), so:

4(x+7)

We multiply parentheses

4x+28

Back to the equation:

-(4x+28)



We get rid of parentheses

12x-4x-28-4=0

We add all the numbers together, and all the variables

8x-32=0

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

8x=32

x=32/8

x=4

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