# Thread: If + + = + then * * = +

1. my mind says in this way

if
_ _ = +

+ + = +

then

* * = + ((as * is form of addition (repeated addition) then it is also true))
and

/ / = + (as division stands for repeated subtractions)

* / = _

signs
_(subtraction)
*(multiplication)
/ (division)

2. ### Related Discussions:

3. Your notation is too cryptic. Explain what you mean by ** or // etc.

4. Originally Posted by precious
my mind says in this way

if
_ _ = +

+ + = +

then

* * = + ((as * is form of addition (repeated addition) then it is also true))
and

/ / = + (as division stands for repeated subtractions)

* / = _

signs
_(subtraction)
*(multiplication)
/ (division)
I think I see what you mean by that. As in 2--2 is the same as 2+2.

So, then you would think that 2**2 should be the same as 2+2.
And 2//2 is also the same.

Well the reason you see two minus signs sometimes is because one of those "-" signifies the negativity of a number.

As in -2 is negative two. Because subtracting a negative is the same thing as adding its positive. As in 2-(-2) = 2+2.

And adding a positive is just our familiar addition. 2--2 is not 2 subtracting subtracting 2. It's 2 subtracting negative 2.

So we don't use ** or // because we don't use * or / to signify any quality of a number.
Instead they're used just for operations.

We use "+" and "-" for both operations and number positivity/negativity.

BTW, division is not subtraction repeated. Division is an inverse operation like subtraction.
Inverse operations are just reverses of the original operation.

Multiplication is repeated addition and subtraction.

2*4 = 4+4
1*4 = just 4
0*4 = 4-4 (that's why 0 times a number is always zero)

5. This is a simple summary of operations:

Addition: The most basic form of operations.

Subtraction: Reverse addition. If 2+5 = 7, then 7 - 5 = 2.

Multiplication: Repeated addition AND subtraction (n just represents any number)
3n = n + n + n
2n = n + n
1n = n (nothing happens)
0n = n - n (always zero)
-1n = n - n - n
-2n = n - n - n - n

Division: Reversed multiplication. If 2 * 8 = 16, then 16 / 8 = 2.

6. @Eonos115
how all this is related to my querry?

7. Your query was too meaningless to decipher, so any response is as good as any other.

8. _ _ = +

Should be define as -*-=+ and -*-*-=-

+ + = +

+*+=+ and +*+*+=+

Your premiss of - - = + is only true of there are even number of negative numbers

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