# When you reverse the digits in a certain two-digit number you decrease its value by 18. What is the number if the sum of its digits is 12?

##### 1 Answer

Feb 21, 2017

#### Explanation:

We can also write

And also

By simpifying EQ(1) we get

or

or

or

By adding up EQ(2) and EQ(3) we get

or

or

or

By plugging the value of

or

or

Therefore the Number is