Divide the numerater by the denominater by the greatest commen facter
The picture is a bit blurry but the perimeter of a shape is the lengths added.
(4a - 2b) + (7a + 3) + (9a - 4) = perimeter, I added the sides together
Combine like terms to get:
4a + 7a + 9a = 20a
-2b is left along becuase there are no other like terms
3 - 4 = -1
The perimeter is 20a - 2b - 1
Answer:
b I did the test already
Step-by-step explanation:
B
1. 12in 168in
2. 60min
3. 12in 60min
4. 168in
