Monday

December 22, 2014

December 22, 2014

Posted by **Joe Mhar Plaza** on Thursday, January 6, 2011 at 10:10pm.

- Math -
**Writeacher**, Thursday, January 6, 2011 at 10:14pmAssistance needed.

- tres ninos school -
**Reiny**, Thursday, January 6, 2011 at 10:28pmlet the unit digit be x

let the tens digit be y

so the "value" of the two digit number is 10y + x

and then you said:

10y + x = 11y

x = y

but we also know x+y = 12

mmmh? Can you think of two numbers that are equal and add up to 12 without doing the algebra?

**Answer this Question**

**Related Questions**

exploring mathematics elementary algebra - the sum of the digits of a two-digit ...

Exploring mathematics elementary algebra - The tens digit of a two-digit number ...

Exploring mathematics elementary algebra - The units digits of a two-digit ...

Exploring mathematics elementary algebra - the units of a two-digit number ...

Algebra math. - 1) the sum of the digits of a two digit number is 9. The value ...

math - This is an SAT question of the day that I can't understand. The sum of ...

Math - Algebra - What is the linear equation that will represent the second ...

math - This is an SAT Question of the Day. The sum of the digits of a three-...

algebra 2 - a two-digit counting number has a value that is 13 greater than 3 ...

word problem - the different between the digit of a two digit number is 1, the ...