Step by step
The question
Question: write with math signs: the difference of a number and 2.
the difference of a number and 2
1 Change words to math
2 Put it in order
The first one comes first.
So we get n − 2.
= n − 2
3 Check
Let's check with a number.
Say the number is 10.
The difference of 10 and 2 is 8.
the difference of 10 and 2 is 8
And 10 − 2 is 8 too.
So n − 2 is right!
10 − 2 = 8
Let's look back.
First: change words to math.
Then: put it in order.
Last: check.
Answer
= n − 2