15+18=3x

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Solution for 15+18=3x equation: 



15+18=3x

We move all terms to the left:

15+18-(3x)=0

We add all the numbers together, and all the variables

-3x+33=0

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

-3x=-33

x=-33/-3

x=+11

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