Question

quien me ayuda con un trabajo por favor
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Answer 1

a) (8(4) + 3) / 4 = 35/4

b) (5(7) + 3) / 7 = 38/7

c) (2(9) + 4) / 9 = 22/9

d) (7(5) + 3) / 5 = 38/5

e) (6(3) + 2) / 3 = 20/3

5.

a) 7/6 + 3/8(-5/9) - 5/3 / -4/7

7/6 - 15/72 + 35/12

m.c.m (6,12,72) = 72

84 - 15 + 210 / 72

279 / 12 = 93/4

b)

(1/6 - 1/5)(4-9/4) + 3(-1/9)

(-1/30)(7/4) + (-1/3)

-7/120 - 1/3

m.c.m (3,120) = 120

-7 + 40 / 120 = 33/120 = 11/40

c)

(4/3 + 9/2) -(3/10 + (2/5)(1/4)) (7/8)

35/6 - (3/10 + 2/20)(7/8)

35/6 - (8/20)(7/8)

35/6 - 56/160

m.c.m (6,160) = 480

2800 - 168 / 480

2632/480 = 277/30

d)

-(6/5+2(8/3)) -(-1/4 -3) : 5/2

- (6/5 +16/3) -(-13/4) : 5/2

-(18+80/15) +13/4 : 5/2

- 98/15 + 26/20

m.c.m (15,20) = 60

-392 + 78 / 60

-314 / 60 = -157 / 30

e)

(9/13 - 4/11(2/3) + 17/2 : 1/6) + 2

(9/13 - 8/33 + 51) + 2

(33(9) - 13(8) / 429 + 51) + 2

(297 - 104 / 429 + 51) + 2

(193/429 + 51) + 2

(21 879 + 193 / 429) + 2

(22 072 / 429) + 2

51,45 + 2

53,45

f)

1/4(3/5 -5/6) : (1/2 - 3: 2/3)

1/4( - 7/30) : (1/2 - 9/2)

-7/120 : -7/2

-7(2) / 120(-7)

-14/-840 = -1/-60 = 1/60