72-3x=42

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Solution for 72-3x=42 equation: 



72-3x=42

We move all terms to the left:

72-3x-(42)=0

We add all the numbers together, and all the variables

-3x+30=0

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

-3x=-30

x=-30/-3

x=+10

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