Question

Each question
Question 1. Let R be a relation on the set Z of all integers defined by(x,y)ER
=> x - y is divisible by x.
prove that
1) (x,x) R for all xEz
ii) (x,y) E R =>(y,x)ER for all x,yaz
iii) (x,y) R and (y,z)ER=>(x,z)£ R for all x,y,zER
7 The rum of three numbers in AP is-3 and their product is 8, find the numbers.​

Answer 1

is this a question it's too lengthy