Question

fie a/3=b/5=c/8 si 2a+3b-c=52
urgeent

Answer 1

a/3=b/5=c/8= k 
a/3 = k => a= 3k
b/5 = k => b= 5k
c/8 = k => c= 8k
2a+3b-c = 52
2x3k + 3x5k - 8k = 52
6k+ 15k - 8k = 52
13k = 52
k= 52/13 => k= 4

a=12
b= 20
c= 32