the difference between the digits in a two-digit numeral is 3. The units digit is twice the tens digit. Find the numeral.

Question

anonymous · Answer

we could write the first words in math as $x-y=3$ i.e. the difference is 3

anonymous · Answer

then the second one means $y=2x$

anonymous · Answer

oh that isn't going to work, lets say 
$y-x=3$ and $y=2x$

anonymous · Answer

that makes $2x-x=3$ or $x=3$ and so $y=6$ making your number $36$

anonymous · Answer

Let the tens digit be x. 

Difference is 3.

Units digit is twice the tens digit so..

x - 2x = 3 

-x = 3 

x = -3 

Tens digit is -3 and one digit -6. 

Number is -36.

anonymous · Answer

How do ypu the equation?

anonymous · Answer

You*