Răspuns :
a = 9 × 4 : 6 = 36 : 6 = 6
b = ( 9 × 4 ) : 6 = 36 : 6 = 6
a + b = 6 + 6 = 12
a - b = 6 - 6 = 0
a × b = 6 × 6 = 36
a : b = 6 : 6 = 1
b = ( 9 × 4 ) : 6 = 36 : 6 = 6
a + b = 6 + 6 = 12
a - b = 6 - 6 = 0
a × b = 6 × 6 = 36
a : b = 6 : 6 = 1