Answer:
p=-9
Step-by-step explanation:
11= p-7-3p
you can slove p-3p now which is -2p, then add -7 to both sides.
18=-2p
then divide by -2
179 students in 3rd grade, 189 4th graders, and 209 5th graders. 577 students total!
see attachment
b: 4
i took the test on edge 2020
