Question

duvidas nas expressão numéricas

Answer 1

a) [(8-15/12)+(27/12)] / (9/2)
(7/12) + (27/12) / (9/2)
(34/12) / (9/2)
34/12* 2/9
68/108
34/54
17/27

b). (-18+25)/10 - (18+1/4)
(7/10) - (19/4)
14-95/20
-81/20

c). -1/2 - (1 + 1)
-1/2 - 2
-1/2 - 4/2
-5/2

d). -9/20 + 5/6*2/4
-9/20 + 10/24
-9/20 + 5/12
-108 + 100/240
-8/240
-1/30