12x+3x=9x+3

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Solution for 12x+3x=9x+3 equation: 



12x+3x=9x+3

We move all terms to the left:

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

We add all the numbers together, and all the variables

15x-(9x+3)=0

We get rid of parentheses

15x-9x-3=0

We add all the numbers together, and all the variables

6x-3=0

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

6x=3

x=3/6

x=1/2

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