12x+9x-3=3(2x+14)

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Solution for 12x+9x-3=3(2x+14) equation: 



12x+9x-3=3(2x+14)

We move all terms to the left:

12x+9x-3-(3(2x+14))=0

We add all the numbers together, and all the variables

21x-(3(2x+14))-3=0



We calculate terms in parentheses: -(3(2x+14)), so:

3(2x+14)

We multiply parentheses

6x+42

Back to the equation:

-(6x+42)



We get rid of parentheses

21x-6x-42-3=0

We add all the numbers together, and all the variables

15x-45=0

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

15x=45

x=45/15

x=3

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