\(\dfrac{14}{3}:y=\dfrac{21}{8}\)
y=\(\dfrac{14}{3}:\dfrac{21}{8}\)
y=\(\dfrac{14}{3}x\dfrac{8}{21}\)
y=\(\dfrac{49}{4}\)
\(\dfrac{49}{4}\) nha bạn
# Coppermouth
tính bằng cách thuận tiện
a. \(\frac{1}{2}\times\frac{2}{3}\div\frac{4}{3}\times\frac{4}{5}\div\frac{6}{5}\times\frac{6}{7}\div\frac{7}{8}\times\frac{8}{9}\div\frac{10}{9}\)
b.\(\frac{27}{49}\times\frac{49}{50}\times\frac{15}{51}\times(\frac{5}{10}-\frac{1}{2})\)
Tính nhanh:
A=\(\left(\frac{2}{5}+\frac{2}{9}+\frac{2}{11}\div\frac{7}{5}+\frac{7}{9}+\frac{7}{11}\right)\div\left(\frac{1}{3}-\frac{1}{4}+\frac{1}{5}\div\frac{7}{6}-\frac{7}{8}+\frac{7}{10}\right)\)
\(2\frac{3}{13}\times5\frac{4}{5}\times7\frac{6}{7}\div\frac{2}{8}=?\)
a,386 phút =.....giờ
2,5 giờ = ...giờ....phút
2,8 giờ = ....giờ...phút
b,Đổi ra giờ và phút: \(\frac{9}{2}giờ;\frac{17}{2}giờ;\frac{8}{5}giờ\)
c,Đổi ra phút:\(\frac{3}{4}giờ;\frac{1}{2}giờ;\frac{2}{3}giờ\)
\(1\frac{5}{7}\times 2\frac{1}{8}\div 1\frac{3}{5}\)
So sánh:\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}}{\frac{\frac{5}{6}}{\frac{7}{8}}}+\frac{\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{4}{3}}{\frac{2}{1}}}\) và\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}+\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{5}{6}}{\frac{7}{8}}+\frac{\frac{4}{3}}{\frac{2}{1}}}\)và \(\frac{\frac{\frac{1}{2}+\frac{8}{7}}{\frac{3}{4}+\frac{6}{5}}}{\frac{\frac{5}{6}+\frac{4}{3}}{\frac{7}{8}+\frac{2}{1}}}\)và\(\frac{\frac{\frac{1+8}{2+7}}{\frac{3+6}{4+5}}}{\frac{5+4}{\frac{6+3}{2+1}}}\)
Nêu cách giải giúp mình với\(\frac{1}{2}+\frac{3}{8}\div\frac{3}{4}\)
\(\frac{6\div\frac{3}{5}-1\frac{1}{6}\times\frac{6}{7}}{4\frac{1}{5}\times\frac{10}{11}+5\frac{2}{11}}\)
\(\frac{\left(\frac{1}{6}+\frac{1}{10}+\frac{1}{15}\right)\div\left(\frac{1}{6}+\frac{1}{10}-\frac{1}{15}\right)}{\left(\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+\frac{1}{5}\right)\div\left(\frac{1}{4}-\frac{1}{6}\right)}\)
