Answer:
(3x5) -6 = 3x3
Step-by-step explanation:
So we know that elijah starts with 3 sets of 5 marbles each.
This can be thought of as 3 x each set, or 3 x 5.
Elijah then gives away 6 marbles from this set, or in other words subtracts 6.
How can this be put into a equation, however?
We know that we are taking 3x5, and subtracting it by 6. However it isnt as simple as 3x5-6.
It would have to be (3x5)-6, since your sets are a total of 15, or 3x5. This total is being subtracted to by 6.
This can be written as:
(3x5)-6
The only equation in your list that looks like this would be the third one, where:
(3x5)-6 = 3x3
So this would be your answer!
Hope this helps! :3
