a) 30-(18-12) = 30-6 = 24.
(30-18)-12 = 12-12 = 0.
30-(18-12) > (30-18)-12
b) (50-20)+10 = 30+10 = 40.
50-(20+20) = 50-40 = 10.
(50-20)+10 > 50-(20+20)
c) 24-(8:4) = 24-2 = 22.
(24-8):4 = 24:4 = 6.
24-(8:4) > (24-8):4
d) (32+32):8 = 64:8 = 8.
32+(32:8) = 32+4 = 36.
(32+32):8 < 32+(32:8)
Sper ca te-am ajutat :)
