Friday

October 31, 2014

October 31, 2014

Posted by **Francesca** on Monday, October 10, 2011 at 12:31pm.

Here is an example: -45 mod 13 = 7, but how?

- Math -
**Steve**, Monday, October 10, 2011 at 12:41pma mod b = (a + nb) mod b

so, -45 mod 13 = mod (-45 + 52) mod 13 = 7 mod 13 = 7

Just add a big enough multiple of the modulus so you have a positive number.

**Answer this Question**

**Related Questions**

Math - How do I solve for negative modular arithmetic? Here is an example: -45 ...

math - Perform the modular arithmetic operation 6.9 ( mod 5)

Math - I am to find all possible values of a and b where a, b are positive ...

math - Which two is true as i'm confused A) 3+7 10 mod 15 17 + 9 4 mod 21 ...

Math - Which Statements of congruence are true and which are false and why? 177 ...

math - Which Statements of congruence are true and which are false and why? 177 ...

Math - Which Statements of congruence are true and which are false and why? 177 ...

Geometry and Discrete Mathematics (Proofs) - Observe that the last two digits of...

Math - Solve X=8(mod 11), X=9(mod 12), X=10(mod 13)

math - how do we find the least residue of 1789 (mod 4), (mod 10), (mod 101)