Odpowiedź:
a) - (12,8 x 5 : 8) = -(64 : 8) = -8
b) 18/5 x 1/2 - 15 = 9/5 - 15 = - 66/5 = - 13 1/5
c) 7/10+5/12 x 18/5 - 11/5 = 7/10 + 1/2 x 3 - 11/5 = 7/10 + 3/2 - 11/5 = 0
d - 11/4 = - 2 3/4
