23+x+100=12x-9

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Solution for 23+x+100=12x-9 equation: 



23+x+100=12x-9

We move all terms to the left:

23+x+100-(12x-9)=0

We add all the numbers together, and all the variables

x-(12x-9)+123=0

We get rid of parentheses

x-12x+9+123=0

We add all the numbers together, and all the variables

-11x+132=0

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

-11x=-132

x=-132/-11

x=+12

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