3+9x=x+4

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



3+9x=x+4

We move all terms to the left:

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

We get rid of parentheses

9x-x-4+3=0

We add all the numbers together, and all the variables

8x-1=0

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

8x=1

x=1/8

x=1/8

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