Question

find (a+b)/(a-b) if a=7/2,b=-5/4​

Answer 1

Answer:

9/19

Step-by-step explanation:

(7/2 - 5/4)  /   (7/2 + 5/4)

14 - 5 / 14 + 5

9/19

Answer 2

Step-by-step explanation:

(a+b)/(a-b)

(7/2+(-5/4))/(7/2-(-5/4))

(7/2-5/4)(7/2+5/4)

(7/2)^2-(5/4)^2

49/4-25/16

196-25/16

171/16