Question

if 2 is the hcf of 18 and 20 and 2=18x+20 y find x+y​

Answer 1

Answer :

none of these

Explanation:

2= 18x + 20 y

If x = -2, then

18× - 2 + 20y = 2

-36 + 20y = 2

20 y = 2 + 36

20 y = 38

y = 38/20

y = 19/10

x +y =  -2 + 19/10

= -20 + 19 / 10

= -1 /10

= - 0 .1