5x + 15 = 15 + 5x
5x = 5x
x = x
?
Answer:
B. 40
C. 8
Step-by-step explanation:
dy/dx = -1/
y = 1/x
dy/dx = d/dx(1/x)
=> dy/dx = d/dx()
=> dy/dx = -
=> dy/dx = -1/