Question

resolva as expressao

a)1\2+(3\2-1\3.(2\7.1\2)=

b)2-3\4+5\3-1\8=

c)7\9+1\2-2\3+3\4=

d)16\7+(1\32.1\2).64-1=

Answer 1

A) 1/2 + [ 3/2 - 1/3 ( 2/7 . 1/2)]
1/2 + [ 3/2 - 1/3 ( 2/14)]
1/2 + [ 3/2 - 2/42]
21/42 + [ 63/42 - 2/42 ]
21/42 + 61/42
82/42
simplificação: 41/21

B) 2 - 3/4 + 5/3 - 1/8
48/24 - 18/24 + 40/24 - 3/24
30/24 + 37/24
67/24

C) 7/9 + 1/2 - 2/3 + 3/4
28/36 + 18/36 - 24/36 + 27/36
46/36 + 3/36
49/36

D) 16/7 + ( 1/32 . 1/2 ) 6 - 1
16/7 + ( 1/64 ) 6 - 1
16/7 + 6/64 - 1
1024/448 + 42/448 - 448/448
1066/448 - 448/448
618/448
simplificação: 309/224