Question

se stie ca:a:b=3,b:2=c,a-b=40.Afla 3a-4b+5c

Answer 1

a:b=3  a=3b
b:2=c 
a-b=40
3b-b=40
2b=40
b=20
20:2=c
c=10
a-20=40
a=60
(3*60)-(4*20)+(5*10)=
180-80+50=
100+50=150
Sper ca te-am ajutat!
Succes la scoala!
O ZI BUNA!