Question

si: a/3 = b/7 = c/9 = d/5 = 9/2
hallar: ( a+b+c+d) tema razones y proporciones aritmetica urgente

Answer 1

a/3=9/2   a=27/2
b/7=9/2   b=63/2
c/9=9/2   c=81/2
d/5=9/2   d=45/2

a+b+c+d=27/2+63/2+81/2+45/2=216/2=108