4x+9=42-7x

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Solution for 4x+9=42-7x equation: 



4x+9=42-7x

We move all terms to the left:

4x+9-(42-7x)=0

We add all the numbers together, and all the variables

4x-(-7x+42)+9=0

We get rid of parentheses

4x+7x-42+9=0

We add all the numbers together, and all the variables

11x-33=0

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

11x=33

x=33/11

x=3

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