Reword maybe? 20 characters
For example, think about 8.4 - 2.9.
You have to regroup because you can't subract 4 - 9.
4 turns into a 14 since you borrow from the left number, 8.
8 turns into a 7 after that.
Now, you have to subtract 14 - 9 and 7 - 2. You're answer is 5.5.
You can check your work by doing inverse opperations:
By adding:
5.5 + 2.9 = 8.4
Or by subracting 8.4 - 5.5 = 2.9
Hope this helped you! If you need a better explaination or another example, I will be happy to help you! :)
Answer:
The inequality that represent the problem is 
The solution in the attached figure
Step-by-step explanation:
Let
x ----> the number of laptops sold
y ----> the number of smartphones sold
we know that
The inequality that represent the problem is equal to

The solution of the inequality is the shaded area
Remember that the number of laptops or the number of smartphones must be a whole positive number
The graph in the attached figure
Answer:

Step-by-step explanation:
