Irene R. answered 05/09/20
BS in Mechanical Engineering and Certified math teacher for 13 years
Let's use the variable, x to represent the unknown number.
The term, "difference", indicates subtraction.
We can represent the" difference between a number and 3" as: x - 3
Now we can show that this difference is no more than 2 as: < 2
Combining these gives the following inequality:
x - 3 < 2