Question

if X + Y + Z = 9 many 3 digit numbers xyz equal to​

Answer 1

Answer:

x+y+z are divisible by 3and9

Answer 2

Answer:

11x+y+1

Step-by-step explanation:

if x+y+z=9

z= 9-x-y

so,xyz= 100x+10y+z

xyz= 100x+10y+9-x-z

xyz=99x+9y+9

xyz=9(11x+y+1)

so, xyz/11x+y+1=9

therefore,the no.xyz is always divisible by 11x+y+1 by 9