Răspuns :
x,z-nr
x+z=70
x/z=4r10
x=z*4+10
4z+10+z=70
5z+10=70
5z=70-10
5z=60
z=12
x=4*12+10=48+10=58
VERIFICARE=58+12=70
58/12=4 rest 10
x+z=70
x/z=4r10
x=z*4+10
4z+10+z=70
5z+10=70
5z=70-10
5z=60
z=12
x=4*12+10=48+10=58
VERIFICARE=58+12=70
58/12=4 rest 10