x+.1x=80

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Solution for x+.1x=80 equation:



x+.1x=80
We move all terms to the left:
x+.1x-(80)=0
We add all the numbers together, and all the variables
1.1x-80=0
We move all terms containing x to the left, all other terms to the right
1.1x=80
x=80/1.1
x=72+0.8/1.1

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