trả lời nhanh giúp mình với
4/5:(7/13-1/3)x12/13
= 4/5:(21/39-13/39)x12/13
=4/5:8/39x12/13
= 3/5x39/8x12/13
= 6/5
\(\frac{4}{5}:\left(\frac{7}{13}-\frac{1}{3}\right)x1\)\(\frac{2}{13}\)
= \(\frac{4}{5}:\left(\frac{21}{39}-\frac{13}{39}\right)x\)\(\frac{15}{13}\)
=\(\frac{4}{5}:\frac{8}{39}x\)\(\frac{15}{13}\)
=\(\frac{4}{5}x\)\(\frac{39}{8}x\)\(\frac{15}{13}\)
=\(\frac{39}{2}\)