3x+9-12+4x=19

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Solution for 3x+9-12+4x=19 equation: 



3x+9-12+4x=19

We move all terms to the left:

3x+9-12+4x-(19)=0

We add all the numbers together, and all the variables

7x-22=0

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

7x=22

x=22/7

x=3+1/7

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