\(\frac{15}{5}-\frac{12}{5}=?\)
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\(B=1\frac{6}{41}\cdot\left(\frac{12+\frac{12}{19}-\frac{12}{37}-\frac{12}{53}}{3+\frac{3}{19}-\frac{3}{37}-\frac{3}{53}}\div\frac{4+\frac{4}{15}+\frac{4}{4}+\frac{4}{2013}}{5+\frac{5}{15}+\frac{5}{4}+\frac{5}{2013}}\right)\cdot\frac{124242423}{237373735}\)
\(B=\frac{47}{41}\cdot\left[\frac{12\left(1+\frac{1}{19}-\frac{1}{37}-\frac{1}{53}\right)}{3\left(1+\frac{1}{19}-\frac{1}{37}-\frac{1}{53}\right)}\div\frac{4\left(1+\frac{1}{15}+\frac{1}{4}+\frac{1}{2013}\right)}{5\left(1+\frac{1}{15}+\frac{1}{4}+\frac{1}{2013}\right)}\right]\cdot\frac{123}{235}\)
\(B=\frac{47}{41}\cdot\left[\frac{12}{3}\div\frac{4}{5}\right]\cdot\frac{123}{235}\)
\(B=\frac{3}{5}\cdot3\cdot\frac{5}{4}\)
\(B=\frac{9}{4}\)
\(7:\frac{1}{5}=7\cdot\frac{5}{1}=35\)
\(\frac{5}{12}-\frac{5}{15}=\frac{5\cdot15-5\cdot12}{12\cdot15}=\frac{1}{12}\)
\(\frac{7}{9}:\frac{5}{12}=\frac{7}{9}\cdot\frac{12}{5}=\frac{28}{15}\)
\(7:\frac{1}{5}=35\)
\(\frac{5}{12}-\frac{5}{15}=\frac{1}{12}\)
\(\frac{7}{9}:\frac{5}{12}=1\frac{13}{15}=\frac{28}{15}\)
\(a.\frac{-3}{5}< \frac{1}{-2}< \frac{-5}{-12}< \frac{2}{3}< \frac{3}{2}\)
\(b.\frac{6}{-5}< \frac{7}{-6}< \frac{9}{-10}< \frac{-2}{-5}< \frac{3}{4}\)
\(c.\frac{4}{-9}< \frac{-7}{21}< \frac{4}{-15}< \frac{8}{12}< \frac{24}{15}\)
Hok tốt :D
=4
Chính xác 100%.k cho mình nha bạn!!Chúc bạn học tốt!!!
\(\frac{20}{16}\)+\(\frac{3}{15}\)+\(\frac{2}{12}\)+\(\frac{3}{4}\)+\(\frac{4}{5}\)+\(\frac{5}{6}\)= (\(\frac{20}{16}\)+\(\frac{3}{4}\) )+( \(\frac{3}{15}\)+ \(\frac{4}{5}\) )+( \(\frac{2}{12}\)+ \(\frac{5}{6}\) )
= 2+1+1 = 4
Chúc bạn học tốt !!!
15/5 - 12/5 = 3/5
Đúng 100 %
15/5 - 12/ 5 = 3 /5 nhe ban ung ho nhe