4x+x-3=9+x

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



4x+x-3=9+x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

5x-(x+9)-3=0

We get rid of parentheses

5x-x-9-3=0

We add all the numbers together, and all the variables

4x-12=0

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

4x=12

x=12/4

x=3

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