Question

one number is seven times another . if their difference is 18,find the numbers​

Answer 1

Answer:

x=7y, |x-y|=18

case1

x=7y x-y=18

7y-y=18 ---> y=3

x=7×3=21

case2

x=7y y-x=18

y-7y=18 ----> y= -3

x=7×(-3) = -21

there are two solutions for (x, y)