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4 tháng 1 2022 lúc 14:32
Tìm x, y, z, t ∈ Z biết:a, dfrac{5}{x}dfrac{-10}{12} b, dfrac{4}{-6}dfrac{x+3}{9} c, dfrac{x-1}{25}dfrac{4}{x-1} d, dfrac{x+1}{y}dfrac{-3}{5}e, dfrac{-12}{6}dfrac{x}{5}dfrac{-y}{3}dfrac{Z}{-17}dfrac{-t}{-9}h, dfrac{-24}{-6}dfrac{x}{3}dfrac{4}{y^2}dfrac{Z^3}{-2}
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Tìm x, y, z, t ∈ Z biết:
a, \(\dfrac{5}{x}=\dfrac{-10}{12}\) b, \(\dfrac{4}{-6}=\dfrac{x+3}{9}\) c, \(\dfrac{x-1}{25}=\dfrac{4}{x-1}\) d, \(\dfrac{x+1}{y}=\dfrac{-3}{5}\)
e, \(\dfrac{-12}{6}=\dfrac{x}{5}=\dfrac{-y}{3}=\dfrac{Z}{-17}=\dfrac{-t}{-9}\)
h, \(\dfrac{-24}{-6}=\dfrac{x}{3}=\dfrac{4}{y^2}=\dfrac{Z^3}{-2}\)
tìm x biết
a , \(\dfrac{-3}{10}\)-(\(\dfrac{-1}{5}\) +x)=\(\dfrac{-3}{2}\)
b, -(-x+ \(\dfrac{3}{4}\))- \(\dfrac{12}{8}\).- \(\dfrac{32}{15}\)=- \(\dfrac{-1}{2}\)
c, \(\dfrac{x-3}{x+5}\)=\(\dfrac{4}{3}\)
(\(\dfrac{-1}{3}\))\(^3\) x (\(\dfrac{-3}{2}\))\(^2\) - \(\dfrac{-5}{12}\) x \(\dfrac{6}{10}\)
dfrac{1}{5}+dfrac{2}{11} dfrac{x}{55} dfrac{2}{5}+dfrac{1}{5} dfrac{1}{2}+dfrac{1}{3}+dfrac{1}{6} xledfrac{13}{4}+dfrac{14}{8} dfrac{1}{4}+dfrac{5}{12}+dfrac{-1}{13} x dfrac{7}{5}+dfrac{2}{10}+dfrac{1}{2} dfrac{79}{15}+dfrac{7}{5}+dfrac{-8}{3}le xledfrac{10}{3}+dfrac{15}{4}+dfrac{23}{12}
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\(\dfrac{1}{5}+\dfrac{2}{11}< \dfrac{x}{55}< \dfrac{2}{5}+\dfrac{1}{5}\) \(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{6}< x\le\dfrac{13}{4}+\dfrac{14}{8}\)
\(\dfrac{1}{4}+\dfrac{5}{12}+\dfrac{-1}{13}< x< \dfrac{7}{5}+\dfrac{2}{10}+\dfrac{1}{2}\) \(\dfrac{79}{15}+\dfrac{7}{5}+\dfrac{-8}{3}\le x\le\dfrac{10}{3}+\dfrac{15}{4}+\dfrac{23}{12}\)
Tìm xa/dfrac{x}{5}+dfrac{1}{2}dfrac{6}{10}b/dfrac{1}{2}.x+dfrac{1}{2}dfrac{5}{2}c/dfrac{1}{2}-dfrac{2}{3}.xdfrac{7}{12}giúp e ạ
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Tìm x
a/\(\dfrac{x}{5}\)+\(\dfrac{1}{2}\)=\(\dfrac{6}{10}\)
b/\(\dfrac{1}{2}\).\(x\)+\(\dfrac{1}{2}\)=\(\dfrac{5}{2}\)
c/\(\dfrac{1}{2}\)-\(\dfrac{2}{3}\).\(x\)=\(\dfrac{7}{12}\)
giúp e ạ
28 tháng 12 2021 lúc 15:20
Tìm số nguyên x, y biết:
\(a,\dfrac{x}{5}=\dfrac{-18}{10}\) b, \(\dfrac{6}{x-1}=\)\(\dfrac{-3}{7}\) c, \(\dfrac{y-3}{12}\)=\(\dfrac{3}{y-3}\) d, \(\dfrac{x}{25}\)=\(\dfrac{-5}{x^2}\)
tìm x , biết:a) x : 4dfrac{1}{3} -2,5 b) dfrac{3}{5}x + dfrac{1}{4} dfrac{1}{10}c) 2dfrac{7}{9} - dfrac{12}{13}x dfrac{7}{9} d)dfrac{-2}{3}-dfrac{1}{3}left(2x-5right)dfrac{3}{2}
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tìm x , biết:
a) \(x\) : \(4\dfrac{1}{3}\) = -2,5 b) \(\dfrac{3}{5}x\) + \(\dfrac{1}{4}\) = \(\dfrac{1}{10}\)
c) \(2\dfrac{7}{9}\) \(-\) \(\dfrac{12}{13}x\) = \(\dfrac{7}{9}\) d)\(\dfrac{-2}{3}-\dfrac{1}{3}\)\(\left(2x-5\right)=\dfrac{3}{2}\)
Tìm x biết: a) \(\left(x-\dfrac{1}{2}\right)\left(-3-\dfrac{x}{2}\right)=0\) b) \(x-\dfrac{1}{8}=\dfrac{5}{8}\)
c) \(-\dfrac{1}{2}-\left(\dfrac{3}{2}+x\right)=-2\) d) \(x+\dfrac{1}{3}=\dfrac{-12}{5}.\dfrac{10}{6}\)
6 tháng 3 2022 lúc 18:09
Bài 9: Tìm x biết1) dfrac{9}{x}dfrac{-35}{105} 2) dfrac{12}{5}dfrac{32}{x} 3) dfrac{x}{2}dfrac{32}{x} 4) dfrac{x-2}{4}dfrac{x-1}{5}Bài 10: Cho biểu thức Adfrac{3}{n+2}a) Số nguyên n phài thỏa mãn điều kiện gì để A là phân số? b) Tìm phân số A khi n 0? n 2? n -7?
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Bài 9: Tìm \(x\) biết
1) \(\dfrac{9}{x}=\dfrac{-35}{105}\) 2) \(\dfrac{12}{5}=\dfrac{32}{x}\) 3) \(\dfrac{x}{2}=\dfrac{32}{x}\) 4) \(\dfrac{x-2}{4}=\dfrac{x-1}{5}\)
Bài 10: Cho biểu thức \(A=\dfrac{3}{n+2}\)
a) Số nguyên n phài thỏa mãn điều kiện gì để A là phân số? b) Tìm phân số A khi n = 0? n = 2? n = -7?
\(a,\left(\dfrac{37}{9}+\dfrac{13}{4}\right)x\dfrac{9}{4}+\dfrac{11}{4}\) b,\(1+\left(\dfrac{9}{10}-\dfrac{-4}{5}\right):\dfrac{19}{6}\)
c,\(\dfrac{1}{4}-\dfrac{3}{2}+\dfrac{1}{2}x\dfrac{12}{5}\)
Giúp mik nha:>