Question

Szybko na zaraz daję naj (zad 19)

Answer 1

Odpowiedź:

a) 1/9 b)11/24 c)21/40 d) 2 i 11/36 e) 3 i 10/21 f) 21 i 17/24

ROZPISANIE

A) 2/3 = (2*3)/(3*3) = 6/9

5/9 = (5*1)/(9*1) = 5/9

2/3 - 5/9 = 6/9 - 5/9

6/9 - 5/9 = (6-5)/9

(6-5)/9 = 1/9

B)5/6 = (5*4)/(6*4) = 20/24

3/8 = (3*3)/(8*3) = 9/24

5/6 - 3/8 = 20/24 - 9/24

20/24 - 9/24 = (20-9)/24

(20-9)/24 = 11/24

C) 1 1/8 = (9*5)/(8*5) = 45/40

3/5 = (3*8)/(5*8) = 24/40

1 1/8 - 3/5 = 45/40 - 24/40

45/40 - 24/40 = (45-24)/40

(45-24)/40 = 21/40

D)3 2/9 = (29*4)/(9*4) = 116/36

11/12 = (11*3)/(12*3) = 33/36

3 2/9 - 11/12 = 116/36 - 33/36

116/36 - 33/36 = (116-33)/36

(116-33)/36 = 83/36

83/36 = 2 11/36

E) 6 1/7 = (43*3)/(7*3) = 129/21

2 2/3 = (8*7)/(3*7) = 56/21

6 1/7 - 2 2/3 = 129/21 - 56/21

129/21 - 56/21 = (129-56)/21

(129-56)/21 = 73/21

73/21 = 3 10/21

F)4 1/12 = (49*2)/(12*2) = 98/24

1 3/8 = (11*3)/(8*3) = 33/24

4 1/12 - 1 3/8 = 98/24 - 33/24

98/24 - 33/24 = (98-33)/24

(98-33)/24 = 65/24

65/24 = 2 17/24

Szczegółowe wyjaśnienie:

/-kreska ułamkowa