English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2006-11-13 18:28:27 · 17 answers · asked by xiphias 1 in Science & Mathematics Mathematics

17 answers

7-7=13-13
7(1-1)=13(1-1)
By dividing on (1-1) at both the two sides
then 7=13

2006-11-13 18:51:02 · answer #1 · answered by Anonymous · 2 2

In the binary system: 0, 1, 10, 11 stands for 0, 1, 2, 3

In the quinary system (of 4): 0, 1, 2, 3, 10, 11, 12, 13 represents
0, 1, 2, 3, 4, 5, 6, 7 respectively. Therefore, 13 = 7 from the conversion.

2006-11-13 18:50:18 · answer #2 · answered by dreamofyz 2 · 0 0

7 * x = 13 * x if x= 0

2006-11-13 18:34:32 · answer #3 · answered by indoragincajun 1 · 0 0

if 7 and 13 are naturale numbers than there is no way prove this. If you are interested in the construction of the set of naturales take a look at Peano axioms. You will find there a function called the succesor function that works like this: s(0)=1, s(1)=2 and so on.
now supose that 7=13. ie s(12)=13 and s(12)=7, this is in contradiction with the first Peano axiom(every natural has a unique successor)

2006-11-13 19:02:25 · answer #4 · answered by Dao R 1 · 0 0

they're equal in mod 6

mod 6 is the base of the number system. our decimal system is in base 10, or mod 10

7 = 1 in mod 6 as the remainder of 7/6 is 1
13 = 1 in mod 6 as the remainder of 13/6 is 1

thus, 7=13. QED

2006-11-13 18:43:41 · answer #5 · answered by mahnamahna 2 · 0 0

Nope can you?
i can prove 1 = -1 by using Phytagorean Theorem but not 7 = 13.... seems to be impossible!!!

2006-11-13 18:31:12 · answer #6 · answered by bugi 6 · 0 1

I can prove 7=13 if you can prove that earth has a sequared shape!!!

2006-11-13 19:39:38 · answer #7 · answered by Ibraheem G 2 · 0 0

7(base 10) = 13(base 4)

Rob S, you cannot say (-1^2)^(1/2) = -1

because (-1^2)^(1/2) = (-1)^(1/2) which is an imaginary number

is that the subtle error your talking about?

2006-11-13 18:58:57 · answer #8 · answered by Jason D 2 · 1 0

Practically what u r asking is impossible, but theortically if u want to prove it u can use any trial and error method to prove it.

2006-11-13 19:18:17 · answer #9 · answered by Napster 2 · 0 0

since that your question is can you prove that 7=13?
then my answer is yes i can
and i think that is the correct answer ?

2006-11-13 22:56:49 · answer #10 · answered by alaa_cancer 3 · 0 0

fedest.com, questions and answers