30-12=3x

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Solution for 30-12=3x equation: 



30-12=3x

We move all terms to the left:

30-12-(3x)=0

We add all the numbers together, and all the variables

-3x+18=0

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

-3x=-18

x=-18/-3

x=+6

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