Question

va rog ajutor chiar nu știu :((( dau coroana și mă abonez la cel care îmi face tema ​

Answer 1

Răspuns:

12.

a)

3/4 + 1/3 - (1 - 1/2) = 3/4 + 1/3 - 1/2 = (9 + 4 - 6)/12 = 7/12

b)

5/6 + 1/2 - (1/2 - 1/3) = 5/6 + 1/2 - 1/6 = 7/6

c)

15/16 - 1/2 - 1/8 = 5/16

d)

4 - 1/8 - (2 - 3/4) = 4 - 1/8 - 5/4 = 21/4

e)

13/20 + 1/2 - 9/20 = 14/20

f)

31/24 - 1/3 - 11/12 = 1/24

g) 7 - 4 - 32/21 = 44/21

h)

2 - 31/24 - 1/3 = 9/24 = 3/8

i)

24/11 - 1/2 - 7/22 = 30/22

j)

5/6 + 1/3 + 2/3 = 11/3

k)

13/10 - 7/20 - 9/20 = 1/2

l)

34/5 - 5/6 = (204 - 30)/30 = 184/30

m)

17/30 - 1/3 - 1/30 = 6/30 = 1/5

n)

4/5 + 7/8 - 7/20 = 53/40

13)

a)

7/3 + 55/18 - 25/6 = 22/18

b)

5/8 + 21/15 - 1/10 - 3/20 = 112/80 = 28/20 = 7/5

c)

4/9 + 7/3 - 1/6 - 7/30 = 153/90

d)

7/24 + 7/9 - 5/18 = 57/72

e)

1 +7/9 - 4/9 - 5/6 = 1/2

f) 1/30

g)

6/5 + 9/8 + 3/20 - 9/4 = 9/40

h)

5/71 + 66/71 + 2/3 - 2 = (355 - 223)/223 = 132/223

i)

19/10

Nu uita de coroană și de abonament!