Answer:
b) q
c) 7a
d) 2y
Step-by-step explanation:
b) q must be added to p to get p+q
c) 12a-7a = 5a
d) 2y is subtracted from 3x
1. q because p+n=p+q, meaning that q would be the answer
2. 7a because is you subtract by 7a from 12a, you get 5a
3. 2y because 3x-n=3x-2y, in which n=2y, which satisfies the equation 3x-2y
