Respuesta :

10\18=c\4.5 cross multiply
18 x C=10 x 4.5
18 x c=45
c=45-18
c=27

10/18 = c/4.5
4.5 (10) = 18c ...cross multiply
45 = 18c
45/18 = c
2.5 =c
answer: c = 2.5