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