x+2x+4x=9

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Solution for x+2x+4x=9 equation: 



x+2x+4x=9

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x-9=0

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

7x=9

x=9/7

x=1+2/7

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