3x+8x-1=12x-42

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Solution for 3x+8x-1=12x-42 equation: 



3x+8x-1=12x-42

We move all terms to the left:

3x+8x-1-(12x-42)=0

We add all the numbers together, and all the variables

11x-(12x-42)-1=0

We get rid of parentheses

11x-12x+42-1=0

We add all the numbers together, and all the variables

-1x+41=0

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

-x=-41

x=-41/-1

x=+41

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