3=9x+2(-4x+7)

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Solution for 3=9x+2(-4x+7) equation: 



3=9x+2(-4x+7)

We move all terms to the left:

3-(9x+2(-4x+7))=0



We calculate terms in parentheses: -(9x+2(-4x+7)), so:

9x+2(-4x+7)

We multiply parentheses

9x-8x+14

We add all the numbers together, and all the variables

x+14

Back to the equation:

-(x+14)



We get rid of parentheses

-x-14+3=0

We add all the numbers together, and all the variables

-1x-11=0

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

-x=11

x=11/-1

x=-11

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