Question

Vă rog urgent rezolvați!!!!!​

Answer 1

3,4,5

(a+b)/3=(b+c)/4=(c+a)/5=k

suma

2(a+b+c)/(3+4+5)=360/12=30

a+b=90

b+c=120

c+a=150

b+180=210

b=30⁰

a=60⁰

c=90⁰