Sophie's favorite number is a two-digit number. If she reverses the digits, the result is 45 less than her favorite number. Also, one digit is one less than double the other digit. What is Sophie's favorite number?

< What is Sophie's favorite number? >

It's –49.

You can go to https://web2.0calc.com/questions/algebra_49748

to see how I obtained that solution a couple of days ago.

Copy the link then paste it in to the URL field on any computer page.

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>> Copy the link then paste it in to the URL field <<

If you're on a computer you can just select the whole link then right click it.

I also commented on the original :)