Translate the verbal phrase a mathematical expression. Use x to represent the unknown number a number minus 20

Answer 1

When you see "a number minus 20" remember that X is used just to represent any number in the world.

So let's replace "a number" with "X"

We now have "X minus 20"

Now if we write minus with a subtraction sign, we get "X-20" for our answer.

Let me know if you need further help or explanation! Happy to help!