9-x=8,5

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Solution for 9-x=8,5 equation: 



9-x=8.5

We move all terms to the left:

9-x-(8.5)=0

We add all the numbers together, and all the variables

-1x+0.5=0

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

-x=-0.5

x=-0.5/-1

x=0.5/1

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