3*4-x=9

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Solution for 3*4-x=9 equation: 



3*4-x=9

We move all terms to the left:

3*4-x-(9)=0

determiningTheFunctionDomain
-x-9+3*4=0

We add all the numbers together, and all the variables

-1x+3=0

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

-x=-3

x=-3/-1

x=+3

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