X-0.9x=7

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Solution for X-0.9x=7 equation: 



X-0.9X=7

We move all terms to the left:

X-0.9X-(7)=0

We add all the numbers together, and all the variables

0.1X-7=0

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

0.1X=7

X=7/0.1

X=70

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