х-на 1, у на 2, z на 3 полке\boxed{\mathtt{ \left \{ {{x+y=13+y+z} \atop {x=23}} \right. }}\\\boxed{\mathtt{ \left \{ {{23-z=13} \atop {x=23}} \right. }}\\\boxed{\mathtt{ \left \{ {{z=10} \atop {x=23}}\right. }}\\\boxed{\mathtt{y=98-23-10;\ y=65}}\\\mathbf{OTVET:}\mathtt{23,65,10.}