The 3 is distributed to the a+b inside the brackets........
You would make a table first, the top part, just start from zero and add every time. Hope this helps
D So yea or A I think at least try D
The correct answer for this would be the last option. The factors of 48m - 80n are 16(3m - 5n). If you try to solve this, the result would be 48m - 80n. 16 x 3m would be 48m and 16 times 5n would be 80n. Hope this is the answer that you are looking for.
