Răspuns :
Ma = 5,18
Ma = ( a + b ) : 2
5,18 = ( a + b ) : 2
a + b = 5,18 × 2
a + b = 10,36
a = 6,4
b = 10,36 - 6,4
b = 3,96
Ma = ( a + b ) : 2
5,18 = ( a + b ) : 2
a + b = 5,18 × 2
a + b = 10,36
a = 6,4
b = 10,36 - 6,4
b = 3,96