12.3-x=8.9

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Solution for 12.3-x=8.9 equation: 



12.3-x=8.9

We move all terms to the left:

12.3-x-(8.9)=0

We add all the numbers together, and all the variables

-1x+3.4=0

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

-x=-3.4

x=-3.4/-1

x=3+0.4/1

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