Author Topic: What is this called in English?  (Read 4969 times)

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Offline Munchor

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What is this called in English?
« on: July 13, 2011, 03:12:48 pm »
2 - 4
8 - x

x = (4*8 )/2
x = 32/2
x = 16

5 - 15
1 - x

x = 3

What do you call these things:

a - b
c - x

Thanks :)
« Last Edit: July 13, 2011, 03:13:03 pm by ephan »

Offline Anima

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Re: English Question
« Reply #1 on: July 13, 2011, 03:16:05 pm »
variable?
« Last Edit: July 13, 2011, 03:16:29 pm by Anima »


Sorry for my bad English. I'm German.

Offline merthsoft

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Re: English Question
« Reply #2 on: July 13, 2011, 03:17:48 pm »
"x" is a variable, "x=2-4" is an equation. Does that help?
Shaun

Offline Munchor

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Re: English Question
« Reply #3 on: July 13, 2011, 03:20:52 pm »
No I mean it's like the whole thing:

a - b
c - x

I think it's proportion something...

Offline Juju

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Re: English Question
« Reply #4 on: July 13, 2011, 03:25:00 pm »
The rule of three?

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Offline Munchor

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Re: English Question
« Reply #5 on: July 13, 2011, 03:26:01 pm »
The rule of three?

Bingo! Thanks Juju :)
« Last Edit: July 13, 2011, 03:26:09 pm by ephan »

Offline Juju

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Re: English Question
« Reply #6 on: July 13, 2011, 03:27:54 pm »
You're welcome, the rule of three is so useful.

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Offline Deep Toaster

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Re: English Question
« Reply #7 on: July 13, 2011, 03:30:40 pm »
Speaking of the rule of three, I've always loved this explanation:

Quote from: Cocker's Arithmetick
Again, observe, that of the three given numbers, those two that are of the same kind, one of them must be the first, and the other the third, and that which is of the same kind with the number sought, must be the second number in the rule of three; and that you may know which of the said numbers to make your first, and which your third, know this, that to one of those two numbers there is always affixed a demand, and that number upon which the demand lieth must always be reckoned the third number