3.Tính bằng hai cách:
a) \(\frac{9}{5}\) : \(\frac{17}{15}\) +\(\frac{8}{5}\) : \(\frac{17}{15}\) = .............................. b) 0.9 : 0.25 + 1.05 : 0.25 =...........................
= ............................. =...........................
\(\frac{9}{5}\) : \(\frac{17}{15}\) +\(\frac{8}{5}\) : \(\frac{17}{15}\) =................................ 0.9 : 0.25 + 1.05 : 0.25= ..........................
=................................ =........................... Ai nhanh mà đúng thì sẽ được tick nhé!