1. Efetue
a) 2/7 + 3
b) 3/8 + 1/8 + 2/8
c) 6/5 - 3/5
d) 12/25 - 7/25
e) 1/2 + 3/4
f) 2/3 x 4/5
g) 5/6 x 3/4
h) 3/3/6/2
i) 3/3/62
j) (2/3)²
k) (4/8)³
l) √4/8
m) √9/10
Soluções para a tarefa
Resposta:
Explicação passo-a-passo:
m) √9/10
= 3/10
------------------
k) (4/8)³
64/512 :2 = 32/256 :2 = 16/128 :2 = 8/64 :2 = 4/32 :2 = 2/16 :2 = 1/8
------------------------
g) 5/6 x 3/4
= mmc= 6,4 :2
3,2 :2
3,1 :3
1 = 3x2x2 = 12
= 2(5)/12 x 3(3)/12 = 10 x 9/12 = 90/12 :2 = 45/6
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O resto dá pra vc tentar agora.
Resposta:
Explicação passo-a-passo
.
. a) = 2/7 + 21/7 = 23/7
.
. b) = (3 + 1 + 2)/8 = 6/8 = 3/4
.
. c) = (6 - 3)/5 = 3/5
.
. d) = (12 - 7)/25 = 5/25 = 1/5
.
. e) = 2/4 + 3/4 = 5/4
.
. f) = 2 . 4 / 3 . 5 = 8/15
.
. g) = 5 . 3 / 6 . 4 = 15 / 24 = 5/8
.
. h) = ?? i) ???
.
. j) = 2 . 2 / 3 . 3 = 4/9
.
. k) = 4 . 4 . 4 / 8 . 8 . 8 = 1 . 1 . 1 / 2 . 2 . 2 = 1/8
.
. l) = √(1/2)³ = √[(1/2)² . (1/2)]
. = 1/2 . 1 / √2
. = 1 / 2.√2 = 1 . √2 / 2 . 2 = √2 / 4
.
(Espero ter colaborado)