0.999999. . . = 1

[Miles]

.

1. define X as 0.999999 . . . .

2. multiply X by 10: ( 10X )

3. We know that 10 times 0.999999 = 9.999999 . . . So 10X = 9.999999. . .

4. Now subtract X from 10X : 9.999999 . . . -- 0.999999. . . . which = 9. (the parts to the right of the decimal point disappear because they are equal to each other)

5. So 9X = 9

6. and if 9X = 9, then X must = 1

7. Substituting for X from 1. above, 0.99999 . . . . = 1

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[WebersHome]

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Multiplication and subtraction don't work together; whereas multiplication and division do.

X = 0.999999

X multiplied by 10 = 9.999999

X = 9.999999 divided by 10

X = 0.999999

(Algebra 1, freshman year of high school, 1958)
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[Miles]

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Multiplication and subtraction don't work together; whereas multiplication and division do.

X = 0.999999

X multiplied by 10 = 9.999999

X = 9.999999 divided by 10

X = 0.999999

(Algebra 1, freshman year of high school, 1958)
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Probably the silliest thing I've read in a long time. But thanks anyway.

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