Question

How to write 12 less than twice a number is -10 in expanded form

Answer 1

12 less than a number means to subtract 12 from that number. So, 12 less than 20 is 8 , because is 20−12 , 12 less than 12 is 0 , because it's 12−12 , and so on. But since you don't know which number you need to subtract from, it's a variable, and you can call it as you like, usually x .

Answer 2

Let’s break this up in to pieces:

12 less meaning -12

Twice a number meaning 2 times a number, let “a number” be x so 2x

12 less than twice a number is -10 will be

2x - 12 = -10