Posted by **Devan** on Monday, September 27, 2010 at 10:25pm.

Base Twelve.

B08twelve + ? = 9twelve

- college math -
**bobpursley**, Monday, September 27, 2010 at 10:28pm
So is your question using base twelve, 08+?=9

or is it

Base eight, 12 + ?= what in base 12?

I have no idea what your question is

- college math -
**Reiny**, Monday, September 27, 2010 at 10:40pm
Are you supposed to work your arithmetic within the base 12 ?

If so, then you should have an addition table, which you can use also for subtraction

Other option:

switch the numbers to base 10, do the arithmetic, then switch back.

B08twelve + ? = 9twelve

(11(12^2) + 0(12) + 8) + ? = 9

1592 + ? = 9

the missing number is -1583

which in base 12 = -AB1

to work within the base

B08

- 9 I will have to borrow, all the way from the B

-----

AB1

## Answer this Question

## Related Questions

- College Math 213 - write each of the following in the indicated base. 1011two to...
- college math - E08twelve + ? = 9twelve
- Math - Convert the following base-ten numbers to a numerical in the indicated ...
- Math - Write each of the following in the indicated base. (a) 1021three to base ...
- MTH 213-Elementary Math - Write each of the following in the indicated base. (a...
- math - Find the representation of the number 256 in the following bases: a. base...
- Math - E08twelve - ? = 9twelve
- Math - E08twelve + ? = 9twelve
- explorations in math - covert 2068 twelve to base 10
- Math - Change the numbers to base ten. Select the correct answer. 973 twelve 1,...