Question

if 1+1=2 and 1-1=0 and 1+2+3+4+5=15 what is 5-4-3-2-1=?

Answer 1

5 - 10

Answer 2

Don't you own a calculator?
-5

Answer 3

lol

Answer 4

http://www.wolframalpha.com/input/?i=5-4-3-2-1

Answer 5

i own a mancala board

Answer 6

if 1+2+3+4+5=15
then -(1+2+3+4+5)=-15
so -1-2-3-4-5=-15
add 10 on both sides
-1-2-3-4-5+10=-15+10
-1-2-3-4+5=-5

Answer 7

and of course we can use everything you have before what is
so we have 1+1=2
5(1+1)=5(2)
5(1+1)=10

Answer 8

so i added 5(1+1) on both sides

Answer 9

but remember 1+1=2

Answer 10

and 5(2)=10

Answer 11

so we can say i added 5(1+1) on both sides or we can say i added 10 on both sides

Answer 12

whatever floats your boat

Answer 13

mancala lol

Answer 14

lol

Answer 15

i graduated to an abacus

Answer 16

it is still beta, but works ok
only a few bugs

Answer 17

why does wolfram say minus 5 instead of negative 5

Answer 18

idk

Answer 19

i too say "minus 5"

Answer 20

negative 5 i believe is more correct

Answer 21

use "negative" as an adjective. as in "that is a negative number"

Answer 22

minus is an operation

Answer 23

Minus five and negative 5 is the same. When you say minus 5, it's assumed minus 5 from 0.

Answer 24

i know 0 minus 5 and negative 5 are the same

Answer 25

i love these kind of maths -5

Answer 26

the sign comes with the number
- 5
read "minus 5"

Answer 27

0 minus 5 is right
not minus 5
lol
its my turn to pick on you satellite