Answer:
z = (5sy^4 - N) / 7s
Step-by-step explanation:
N = 5sy^4 - 7sz
Add 7sz to both sides:
N + 7sz = 5sy^4
7sz = 5sy^4 - N
Divide both sides by 7s:
z = (5sy^4 - N) / 7s.
