Răspuns :
a:5=10 . rest 2;
a=52
x:6=9 . rest 4;
x=58
y:7=10 . rest 6 ;
x=76
z:8=9 . rest 3 ;
x=75
a:5=10 r2
deci a= 5x10 +2=52
x:6=9 r4
x=9x6+4 =58
y:7=10 r 6
y=10x7+6=76
z:8=9 r 3
z=9x8+3=75
deci a= 5x10 +2=52
x:6=9 r4
x=9x6+4 =58
y:7=10 r 6
y=10x7+6=76
z:8=9 r 3
z=9x8+3=75