Question

Si la a) 1/2 + 2/3

Trebuie sa aducem la un numitorul comun,si dupa efectuati operatiile.

Va rog,Urgent,Dau coroana​

Answer 1

Răspuns:

Explicație pas cu pas:

b)

3/4 + 1/6 = 9/12 + 2/12 = 11/12

c)

1/20 - 1/30 = 3/60 - 2/60 = 1/60

d)

5/12 - 7/18 = 15/36 - 14/36 = 1/36

e)

1/50 + 1/75 = 3/150 + 2/150 = 5/150 = 1/30

f)

1/2 + 1/3 + 5/6 = 3/6 + 2/6 + 5/6 = 10/6 = 5/3

g)

4/3 + 1/4 - 5/6 = 16/12 + 3/12 - 10/12 = 9/12 = 3/4

h)

1/2 - 1/5 + 7/10 = 5/10 - 2/10 + 7/10 = 10/10 = 1

i)

3/8 + 7/12 - 23/24 = 9/24 + 14/24 - 23/24 = 0/24 = 0

j)

1/2 - 1/5 + 1/6 + 8/15 = 15/30 - 6/30 + 5/30 + 16/30 = 30/30 = 1

k)

1/4 + 1/9 - 1/12 + 13/18 = 9/36 + 4/36 - 3/36 + 26/36 = 36/36 = 1

l)

2 + 1/2 - 4/3 - 1/6 = 12/6 + 3/6 - 8/6 - 1/6 = 6/6 = 1

m)

1 + 2/3 + 3/4 - 7/12 = 12/12 + 8/12 + 9/12 - 7/12 = 22/12 = 11/6