y+y:5/2:4.3/5+y:2/5:4=13/20
y+y.2/5.1/4.3/5+y.5/2.1/4=13/20
y+y.3/50+y.5/8=13/20
y+3/50y+5/8y=13/20
337/200y=13/20
y=130/337
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1. Tìm số tự nhiên n, thỏa mãn : \(\frac{95}{13}\times\frac{105}{31}>n>\frac{100}{31}:\frac{50}{217}.\)
2. Tìm y:
\(y+y:\frac{2}{7}+y\times\frac{3}{5}=102\)
NA
7 tháng 7 2018 lúc 15:29
Tìm y :a, frac{3}{5} x y + frac{1}{2}: frac{5}{3}- frac{5}{4} frac{1}{2}x frac{1}{3}b , frac{4}{5}: y + frac{1}{4}x frac{1}{6}- frac{1}{2} frac{1}{3}x frac{5}{2} c. frac{3}{5}x y - frac{4}{5}: 3 + frac{1}{12} frac{3}{2}+ frac{1}{5}* Ai giải đúng nhất mk k !
Đọc tiếp
Tìm y :
a, \(\frac{3}{5}\) x y + \(\frac{1}{2}\): \(\frac{5}{3}\)- \(\frac{5}{4}\) = \(\frac{1}{2}\)x \(\frac{1}{3}\)
b , \(\frac{4}{5}\): y + \(\frac{1}{4}\)x \(\frac{1}{6}\)- \(\frac{1}{2}\)= \(\frac{1}{3}\)x \(\frac{5}{2}\)
c. \(\frac{3}{5}\)x y - \(\frac{4}{5}\): 3 + \(\frac{1}{12}\)= \(\frac{3}{2}\)+ \(\frac{1}{5}\)
* Ai giải đúng nhất mk k !
Tìm Y: \(Y x \frac{2}{5} - Y x \frac{4}{15} = \frac{3}{2}\)
\(\frac{2}{3} : Y + \frac{7}{8} : Y = \frac{1}{2}\)
Giúp nhanhh xD
\(\frac{13}{7}-\frac{9}{5}=?\)
\(\frac{20}{2}-\frac{1}{8}=?\)
\(\frac{5}{3}+\frac{1}{5}=?\)
\(\frac{5}{3}-\frac{1}{5}=?\)
\(\frac{75}{100}+\frac{18}{21}+\frac{19}{23}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}=\)
\(4\frac{2}{5}+5\frac{6}{9}+2\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(\frac{2}{3\cdot5}+\frac{2}{5\cdot7}+\frac{2}{7\cdot9}+.....+\frac{2}{41\cdot43}\)
bài 1 : tính phân số:a) frac{5}{7}+frac{4}{9}?;frac{4}{5}-frac{2}{3}?;frac{9}{11}+frac{3}{8}?;frac{16}{25}-frac{2}{5}??b)5+frac{3}{5}?;10-frac{9}{16}?;frac{2}{3}-left(frac{1}{6}+frac{1}{8}right)?c)frac{5}{7}+frac{7}{6}?;frac{7}{12}+frac{17}{18}?;frac{9}{8}+frac{15}{32}?;4+frac{35}{45}?d)frac{11}{4}-frac{15}{16}?;frac{5}{6}-frac{5}{8}?;frac{196}{64}-2?;3-frac{13}{9}?e)frac{8}{5}+frac{7}{6}+frac{5}{9}-2?;3-frac{5}{6}-frac{4}{9}+frac{32}{24}?
Đọc tiếp
bài 1 : tính phân số:
a) \(\frac{5}{7}+\frac{4}{9}=?;\frac{4}{5}-\frac{2}{3}=?;\frac{9}{11}+\frac{3}{8}=?;\frac{16}{25}-\frac{2}{5}=?\)=?
b)\(5+\frac{3}{5}=?;10-\frac{9}{16}=?;\frac{2}{3}-\left(\frac{1}{6}+\frac{1}{8}\right)=?\)
c)\(\frac{5}{7}+\frac{7}{6}=?;\frac{7}{12}+\frac{17}{18}=?;\frac{9}{8}+\frac{15}{32}=?;4+\frac{35}{45}=?\)
d)\(\frac{11}{4}-\frac{15}{16}=?;\frac{5}{6}-\frac{5}{8}=?;\frac{196}{64}-2=?;3-\frac{13}{9}=?\)
e)\(\frac{8}{5}+\frac{7}{6}+\frac{5}{9}-2=?;3-\frac{5}{6}-\frac{4}{9}+\frac{32}{24}=?\)
\(\frac{y}{13}\)+ \(\frac{6}{y}\)= \(\frac{1}{2}\)
b) \(\frac{24}{y}\):\(\frac{8}{3}\)=\(\frac{23}{20}\)
Tìm y
Tính bằng cách thuận tiện nhất :
a) \(\frac{2}{5}+\frac{1}{6}+\frac{3}{5}\)
b) \(\frac{9}{13}+\frac{4}{13}+\frac{2}{3}\)
frac{1}{3}+ frac{3}{4}x frac{5}{9}frac{7}{12}-frac{5}{4}xfrac{2}{15}y+frac{1}{4}frac{7}{8}-frac{3}{8}y-frac{5}{12}frac{2}{3}-frac{1}{4}frac{12}{7}x yfrac{16}{21}frac{5}{4}: y frac{7}{12}
Đọc tiếp
\(\frac{1}{3}\)+ \(\frac{3}{4}\)x \(\frac{5}{9}\)=
\(\frac{7}{12}\)-\(\frac{5}{4}\)x\(\frac{2}{15}\)=
y+\(\frac{1}{4}\)=\(\frac{7}{8}\)-\(\frac{3}{8}\)
y-\(\frac{5}{12}\)=\(\frac{2}{3}\)-\(\frac{1}{4}\)
\(\frac{12}{7}\)x y=\(\frac{16}{21}\)
\(\frac{5}{4}\): y =\(\frac{7}{12}\)