Respuesta :

Answer:

x=9

y=2

z=1

Step-by-step explanation:

xx+yy=zyz

xx can be divided by 11

yy can be divided by 11

zyz can be divided by 11

3 digit multiples of 11

110

121

132...

121=zyz because z=1 and y=2

121-22=99

xx=99

x=9

z=1

y=2