Answer:
The difference is : 10 - y
Step-by-step explanation:
Let we donate the required difference by 'd'
Now, we need to find difference(d) in such a way that it is y units less than 10. So, Using concept of algebraic expressions :
A number which is less than another can be found by subtracting first number from the second number :
So, the required difference is given by : d = 10 - y
