Răspuns:
2. Not
Cele doua nr= a, b
A+b=70
A:b=4 rest 10
A=b*4+10
A|-|-|-|-|+10
} 70
B|-|
70-10=60
60:5=12(b)
B=12
A=12*4+10
A=48+10
A=58
Verificare:58+12=70
58:12=4 rest 10
4.D=î*c+r
Nr sunt:
7*6=42
7*6+1=43
7*6+2=44
7*6+3=45
7*6+4=46
7*6+5=47
7*6+6=48