4x-12+3x=30

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Solution for 4x-12+3x=30 equation: 



4x-12+3x=30

We move all terms to the left:

4x-12+3x-(30)=0

We add all the numbers together, and all the variables

7x-42=0

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

7x=42

x=42/7

x=6

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