Răspuns :
a+b=69
a:b=7 rest 5
a=7b+5
7b+5+b=69
8b=69-5=64
8b=64
b=64:8
b=8
a=7x8+5=56+5
a=61
V: 61+8=69
61:8=7 rest 5
a:b=7 rest 5
a=7b+5
7b+5+b=69
8b=69-5=64
8b=64
b=64:8
b=8
a=7x8+5=56+5
a=61
V: 61+8=69
61:8=7 rest 5
a+b=69
a:b=7 rest 5
a=7b+5
7b+5+b=69
8b+5=69
8b=69-5
8b=64
b=64:8
b=8
a=7*8+5
a=56+5
a=61
a:b=7 rest 5
a=7b+5
7b+5+b=69
8b+5=69
8b=69-5
8b=64
b=64:8
b=8
a=7*8+5
a=56+5
a=61