3x+9=2x+4x-42

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Solution for 3x+9=2x+4x-42 equation: 



3x+9=2x+4x-42

We move all terms to the left:

3x+9-(2x+4x-42)=0

We add all the numbers together, and all the variables

3x-(6x-42)+9=0

We get rid of parentheses

3x-6x+42+9=0

We add all the numbers together, and all the variables

-3x+51=0

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

-3x=-51

x=-51/-3

x=+17

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