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What do you guys think about this equation?? by equation - Thu, 16 Feb 2017 21:56:31 EST ID:3CQShUbt No.15337 Ignore Report Quick Reply
File: 1487300191718.jpg -(376323B / 367.50KB, 2048x1536) Thumbnail displayed, click image for full size. 376323
DICKS EVERYWHERE
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Esther Dribbleforth - Fri, 17 Feb 2017 23:12:09 EST ID:A2j/BW/W No.15338 Ignore Report Quick Reply
>x = 0.0777...
>jk, x is infinity

Anyway, you fucked up the very first line. Should be 0.777... = 10x. From there, you can break up the lhs to get 0.7 + x = 10x. Subtract x from both sides: .7 = 9x. Divide by 9: x = 0.7/9 = 7/90. So 0.0777... = 7/90.
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Beatrice Crenningmock - Sun, 19 Feb 2017 01:54:24 EST ID:A2j/BW/W No.15339 Ignore Report Quick Reply
>>15338
And by "you" I mean whoever wrote that troll proof. I was under the impression it was your doing at first, but now I see you're just asking about it.

In that case, and looking at this with fresh eyes, I see that whoever wrote this is confusing (purposefully?) things like 0.7x with 0.7 + x.

0.7x = (7/10)(7/90) = (7*7)/(10*90) = 48/900 =

Whereas, 0.7 + x = 0.7 + 0.0777... = 0.777...

Or, 0.7 + x = 7/10 + 7/90 = 63/90 + 7/90 = 70/90 = 7/9

This confusing of addition with multiplication is the main theme of the "proof". The only things done correctly here are multiplying or dividing equations through by ten and the realization that a number subtracted from itself is zero (the number doesn't need to be infinity for this to work as is stated in the "proof").
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Sidney Hummerwedge - Tue, 21 Feb 2017 00:04:06 EST ID:vrOFV9fT No.15340 Ignore Report Quick Reply
>>15337

If you want to deal with things like 0.777 repeating it's best to use a symbol like a, rather than those fucking dots. Everything went wrong after the part in the rectangle in the attached image.
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Fucking Grandville - Wed, 22 Feb 2017 00:08:02 EST ID:A2j/BW/W No.15343 Ignore Report Quick Reply
>>15340
English use those dots instead of the vinculum. Chinese do too.


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