a:\(\dfrac{33}{44}=\dfrac{3}{4}\\ MSC:8\\ \dfrac{3}{4}=\dfrac{3\times2}{4\times2}=\dfrac{6}{8};\dfrac{2}{8}\)
b:\(\dfrac{9}{12}=\dfrac{3}{4};\dfrac{24}{36}=\dfrac{7}{9}\\ MSC:72\\ \dfrac{3}{4}=\dfrac{3\times18}{4\times18}=\dfrac{54}{72};\dfrac{7}{9}=\dfrac{7\times8}{9\times8}=\dfrac{56}{72};\dfrac{3}{8}=\dfrac{3\times9}{8\times9}=\dfrac{27}{72}\)
\(a,\dfrac{33}{44}=\dfrac{3}{4}=\dfrac{3\times2}{4\times2}=\dfrac{6}{8}.và.\dfrac{2}{8}\\ b,\dfrac{9}{12}=\dfrac{3}{4}=\dfrac{3\times6}{4\times6}=\dfrac{18}{24}\\ \dfrac{24}{36}=\dfrac{2}{3}=\dfrac{2\times8}{3\times8}=\dfrac{26}{24};\dfrac{3}{8}=\dfrac{3\times3}{8\times3}=\dfrac{9}{24}\)
bn học online hay học rồi nhưng ko chú ý vào bài mà mải chơi game , hay lm vc riêng ? nên ko bik lm bài tập cô giao ?
