Răspuns :
a |-----|+61|
b |-----| } 75.
75 - 61 = 14 ( 2 parti egale)
14 : 2 = 7 (b)
61 +7 = 68 (a)
Verificam : 68 +7 = 75 ( suma)
68 - 7 = 61 ( diferenta).
b |-----| } 75.
75 - 61 = 14 ( 2 parti egale)
14 : 2 = 7 (b)
61 +7 = 68 (a)
Verificam : 68 +7 = 75 ( suma)
68 - 7 = 61 ( diferenta).