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Va rog ! Este urgent!!!
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Va Rog Este Urgent Doar Ex Încercuite class=

Răspuns :

Raspunsuri:

a) 5/3

b)1/7

c)13/35

d) 33/35

e) 88/21

Explicatie:

a) x= 7/3-2/3=5/3

b) x=4/7-3/7=1/7

c)x= 15/35-2/35=13/35 (am amplificat prima fractie cu 5)

d) 11/5+x=22/7 (amplific prima fractie cu 7 si a doua cu 5)

   77/35+x=110/35

   x=110/35-77/35=33/35

e) 22/3-x=66/21 (amplific prima fractie cu 7)

    154/21-x=66/21

  x=154/21-66/21=88/21

 

a)X+2/3=7/3

X=7/3-2/3

X=5/3

b)3/7+X=4/7

X=4/7-3/7

X=1/7

c)3/7-2/35=X

13/35=X

d)2 1/5+X=3 1/7

11/5+X=22/7

X=22/7-11/5

X=33/35

e)7 1/3-X=3 1/7

22/3-X=22/7

22/3-22/7=X

X=88/21