Question

Mircea are 38 de masinute de colectie rosi si albastre Cate masinute de fiecareare fel are Mircea stind ca masinutele rosi sunt cu 8 mai multi decat cele albastre. rezolva in doua moduri

Answer 1

38 masinute de colectie
masinute rosii =masinute albastre + 8
masinute rosii + masinute albastre = 38
Inlocuim
masinute albastre +8+ masinute albastre= 38
2 masinute albastre + 8= 38
2 masinute albastre= 38-8
2 masinute albastre= 30
masinute albastre= 30:2=15
masinute rosii = 15+ 8= 23
23+ 15= 38


|__|__+8_| masinute rosii
|__| masinute albastre. } 38
38-8= 30
30 :2=15 - masinute albastre
15+ 8= 23 - masinute rosii