Question

Necesito ayuda con estos ejercicios, el problema 14 no hay que hacerlo

Answer 1

te resolvi el punto 1) a y b

Answer 2

Respuesta:

11.

a) 17/24

b) 7/16

c) 3/8

d) 29/48

12.

a) 14/35

b) 2/3

c) 1/9

d) 2/13

13.

a) 2/3

b) 851/660

c) 5/12

Explicación paso a paso:

11.

a) 5/6 - 3/24 = 20/24 - 3/24 = 17/24

b) 1/2 × (8/6 - 1/6) × 3/4 = 1/2 × 7/6 × 3/4 = 7/12 × 3/4 = 21/48 = 7/16

c) (4/6 - 1/6) × 3/4 = 3/6 × 3/4 = 9/24 = 3/8

d) 1/2 × (4/3 - 3/24) = 1/2 × (32/24 - 3/24) = 1/2 × 29/24 = 29/48

12.

a) (7/7 - 5/7) × (10/5 - 3/5) = 2/7 × 7/5 = 14/35

b) (4/4 - 1/4) : (8/8 + 1/8) = 3/4 : 9/8 = 24/36 = 2/3

c) (10/15 - 9/15) × (3/3 + 2/3) = 1/15 × 5/3 = 5/45 = 1/9

d) (6/10 - 5/10) : (5/20 + 8/20) = 1/10 : 13/20 = 20/130 = 2/13

13.

a) 5/12 - (6/22 - 11/22) × (4/10 + 7/10) = 5/12 + 5/22 × 11/10 = 5/12 + 55/220 = 275/660 + 165/660 = 440/660 = 2/3

b) 5/12 - (6/23 - 11/22) + (4/10 + 7/10) = 5/12 - 5/22 + 11/10 = 275/660 - 150/660 + 726/660 = 125/660 + 726/660 = 851/660

c) (3/12 - 4/12) + (15/20 - 8/20) : (10/10 - 3/10) = -1/12 + 7/20 : 7/10 = -1/12 + 70/140 = -1/12 + 1/2 = -1/12 + 6/12 = 5/12