Rozwiązane

69.
Oblicz:
a) (3 + 2 ): 5
b) 61: 4 + 2
C) 34 +2:3
d) (43-24):2

69 Oblicz A 3 2 5 B 61 4 2 C 34 23 D 43242 class=

Odpowiedź :

Odpowiedź:

(3 i 3/4 + 2 i 1/8) : 5 = (3 i 6/8 + 2 i 1/8) : 5 = 5 i 7/8 : 5 = 47/8 * 1/5 = 47/40 = 1 i 7/40

6 i 1/8 : 4 + 2 i 3/4 = 49/8 * 1/4 + 2 i 3/4 = 49/32 + 2 i 3/4 = 49/32 + 2 i 24/32 = 2 i 73/32 = 4 i 9/32

3 i 1/6 + 2 i 1/3 : 3 = 3 i 1/6 + 7/3 * 1/3 = 3 i 1/6 + 7/9 = 3 i 3/18 + 14/18 = 3 i 17/18

(4 i 3/5 - 2 i 1/2) : 2 = (4 i 6/10 - 2 i 5/10) : 2 = 2 i 1/10 : 2 = 21/10 * 1/2 = 21/20 = 1 i 1/20

Tojamikiviz

Odpowiedź:

a)

(3 3/4 + 2 1/8) : 5 = (3 6/8 + 2 1/8) : 5 = 5 7/8 : 5 = 47/8 * 1/5 = 47/40 = 1 7/40

b)

6 1/8 : 4 + 2 3/4 = 49/8 * 1/4 + 2 3/4 = 49/32 + 2 24/32 = 1 17/32 + 2 24/32 =

= 3 41/32 = 4 9/32

c)

3 1/6 + 2 1/3 : 3 = 3 1/6 + 7/3 * 1/3 = 3 1/6 + 7/9 = 3 3/18 + 14/18 = 3 17/18

d)

(4 3/5 - 2 1/2) : 2 = (4 6/10 - 2 5/10) * 1/2 = 2 1/10 * 1/2 = 21/10 * 1/2 = 21/20 =

= 2 1/10

Szczegółowe wyjaśnienie:

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