Part B : 21 = - 4p-11

p=-8

Step-by-step explanation:

21=-4p-11

1) Add 11 to both sides:

32=-4p

2) Divide both sides by - 4 to isolate p:

p=-8

Answer: p=8

Step-by-step explanation:

4p-11=21

We move all terms to the left:

4p-11 - (21) = 0

We add all the numbers together, and all the variables

4p-32=0

We move all terms containing p to the left, all other terms to the right

4p=32

p=32/4

p=8