Question

A expressão 10^10 + 10^20 + 10^30 SOBRE 10^20 + 10^30 + 10^40 equivale a?

Answer 1

$\dfrac{10^{10}+10^{20}+10^{30}}{10^{20}+10^{30}+10^{40}}=\dfrac{10^{10}(1+10^{10}+10^{20})}{10^{20}(1+10^{10}+10^{20})}=\dfrac{10^{10}}{10^{20}}=\dfrac{1}{10^{10}}=10^{-10}=\\\\0.0000000001$