Question

Tot ce este incercuit,va rog urgent!!Imi trebuie maine.
Dau 60 de puncte si 5 stele​

Answer 1

vxcxxv x-Zach a f2f f

sper că te am ajutat

Answer 2

Răspuns:

Buna!!

2013 model 3:

Fie a,b cele doua numere reale a+b=1,(6)

a-b=0,(3) ⇒a=0,(3)+b

3/9+b+b=15/9

1/3+2b=5/3

2b-5/3-1/3

2b-4/3

b=4/3-1/2

b=2/3

⇒a=3/9+2/3 a=1/3+2/3

a=3/3

a=1

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2013 spec 3:

10% • 1000lei=(10•1000):100

=10000:100

=100

1000-100=900lei

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2013 rez 3:

a+b=10

a-b=2=>a=b+2. Inlocuim in prima ecuatie

b+2+b=10

b+b+2=10

2b-10-2

2b=8

b=8/2 ( adica 8 impartit la 2)

b=4

si ziceam ca a=b+2,

deci a=4+2, a=6

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2014 model 3:

a+b=27

a-fete

b-baieti

a=b+25b/100=(100b+25b)/100=125b/100=5b/4

5b/4+b=27

(5b+4b)4=27

9b/4=27

b=27x4/9=12 baieti a=27-b=27-12-15 fete

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succes, sper sa intelegi ❤