3x+2x+3x-1=12+x

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Solution for 3x+2x+3x-1=12+x equation: 



3x+2x+3x-1=12+x

We move all terms to the left:

3x+2x+3x-1-(12+x)=0

We add all the numbers together, and all the variables

3x+2x+3x-(x+12)-1=0

We add all the numbers together, and all the variables

8x-(x+12)-1=0

We get rid of parentheses

8x-x-12-1=0

We add all the numbers together, and all the variables

7x-13=0

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

7x=13

x=13/7

x=1+6/7

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