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Ajutorrr rrrrrrrrrrrrrrrrrrrrrrrrrr​

Ajutorrr Rrrrrrrrrrrrrrrrrrrrrrrrrr class=

Răspuns :

Răspuns:

notam cu x pretul cariocilor

x-20 prețul pixului

2x+10 prețul stiloului și vom avea

x+x-20+2x+10=90

4x=90+20-10

4x=100

x=25

25 lei carioci

5 lei pix

60 stilou

Explicație pas cu pa.