x - $\frac{10}{11.13}$ - $\frac{10}{13.15}$ - .... - $\frac{10}{53.55}$ = 3/10
x - 10.($\frac{1}{11.13}$ - $\frac{1}{13.15}$ - ... - $\frac{1}{53.55}$ = 3/10
x - 10.($\frac{1}{11}$ - $\frac{1}{13}$ - $\frac{1}{13}$ - $\frac{1}{15}$ - ... - $\frac{1}{53}$ - $\frac{1}{55}$ = 3/10
x - 10.($\frac{1}{11}$ - $\frac{1}{55}$) = 3/10
x - 10.$\frac{4}{55}$ = 3/10
x - $\frac{8}{11}$ = 3/10
x = 3/10 + $\frac{8}{11}$
x = 113/110
Vậy x = 113/110
