Question

If x # y = 2 (x+y)/(x-y), then find the value of (4#3) 7 ​

Answer 1

Step-by-step explanation:

x+y=7⋯(1)

x−y=3

x=y+3

Put it in (1)

y+3+y=7

2y+3=7

2y=7−3

2y=4

y=

2

4

=2

Put y=2 in x+y=7 we get

x=7−y=7−2=5

∴x=5,y=2