Question

Find (x+y) +(x-y) if x = 4/5 and y = - 1/7

Answer 1

(x+y)+(x-y)=x+y+x-y=2x

2x=2(4/5)=8/5

Answer 2

Answer:

We have ,

x=4/5 ,and y= 1/7

(x+y) + (x_y)

(4/5 + 1/7) + (4/5_1/7)

33/35+ 23/35

61/35