x=9-4x

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Solution for x=9-4x equation: 



x=9-4x

We move all terms to the left:

x-(9-4x)=0

We add all the numbers together, and all the variables

x-(-4x+9)=0

We get rid of parentheses

x+4x-9=0

We add all the numbers together, and all the variables

5x-9=0

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

5x=9

x=9/5

x=1+4/5

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