3x-9+12=1x+4

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Solution for 3x-9+12=1x+4 equation: 



3x-9+12=1x+4

We move all terms to the left:

3x-9+12-(1x+4)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

3x-(x+4)+3=0

We get rid of parentheses

3x-x-4+3=0

We add all the numbers together, and all the variables

2x-1=0

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

2x=1

x=1/2

x=1/2

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