12x+9x=9+5x

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Solution for 12x+9x=9+5x equation: 



12x+9x=9+5x

We move all terms to the left:

12x+9x-(9+5x)=0

We add all the numbers together, and all the variables

12x+9x-(5x+9)=0

We add all the numbers together, and all the variables

21x-(5x+9)=0

We get rid of parentheses

21x-5x-9=0

We add all the numbers together, and all the variables

16x-9=0

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

16x=9

x=9/16

x=9/16

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