(x-0.1x)4=9

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Solution for (x-0.1x)4=9 equation: 



(x-0.1x)4=9

We move all terms to the left:

(x-0.1x)4-(9)=0

We add all the numbers together, and all the variables

(+0.9x)4-9=0

We multiply parentheses

0x-9=0

We add all the numbers together, and all the variables

x-9=0

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

x=9

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