te rooooog cinevaaa:(((((( AC=80cm
5xAB=3xBC
AB?
![Te Rooooog Cinevaaa AC80cm 5xAB3xBC AB class=](https://ro-static.z-dn.net/files/dbc/7eabe25105f57cdc1c3a0ce97ff01f0b.png)
Răspuns:AB+BC=80CM
AB=BC×3
(BC×3)+BC=80
4BC=80
BC=80÷4
BC=20 CM
AB=BC×3
AB=20×3
AB=60 CM
Explicație pas cu pas:
Succes