Các câu hỏi tương tự
tìm x trong các tỉ lệ thức sau:
\(\dfrac{4}{x}=\dfrac{8}{x+1}\)
\(\dfrac{3}{2}=\dfrac{9}{\left|x\right|}\)
\(\dfrac{15}{2x-1}=\dfrac{5}{3}\)
heeelp
Tìm x :
a, dfrac{11}{12} - (dfrac{2}{5} +x) dfrac{2}{3} b, x+dfrac{2}{3} dfrac{3}{5} - dfrac{-1}{6} c, x-[dfrac{17}{2} -(dfrac{-3}{7} + dfrac{5}{3} )]dfrac{-1}{3}
d,dfrac{9}{2} - [dfrac{2}{3} - (x+dfrac{7}{4} )] dfrac{-5}{4}
Mọi người giúp mình nha
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Tìm x :
a, \(\dfrac{11}{12}\) - (\(\dfrac{2}{5}\) +x) = \(\dfrac{2}{3}\) b, x+\(\dfrac{2}{3}\) =\(\dfrac{3}{5}\) - \(\dfrac{-1}{6}\) c, x-[\(\dfrac{17}{2}\) -(\(\dfrac{-3}{7}\) + \(\dfrac{5}{3}\) )]=\(\dfrac{-1}{3}\)
d,\(\dfrac{9}{2}\) - [\(\dfrac{2}{3}\) - (x+\(\dfrac{7}{4}\) )] =\(\dfrac{-5}{4}\)
Mọi người giúp mình nha
Tìm x a,3-xx+1,8b,2x-57x+35c,2left(x+10right)3left(x-6right)d,8left(x-dfrac{3}{8}right)+16left(dfrac{1}{6}+xright)+xe,dfrac{2}{9}-3xdfrac{4}{3}-xg,dfrac{1}{2}x+dfrac{5}{6}dfrac{3}{4}x-dfrac{1}{2}h,x-4dfrac{5}{6}left(6-dfrac{6}{5}xright)k,7x^2-116x^2-2m,5left(x+3.2^3right)10^2n,dfrac{4}{9}-(dfrac{1}{6^2})dfrac{2}{3}left(x-dfrac{2}{3}right)^2+dfrac{5}{12}
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Tìm x
\(a,3-x=x+1,8\)
\(b,2x-5=7x+35\)
\(c,2\left(x+10\right)=3\left(x-6\right)\)
\(d,8\left(x-\dfrac{3}{8}\right)+1=6\left(\dfrac{1}{6}+x\right)+x\)
\(e,\dfrac{2}{9}-3x=\dfrac{4}{3}-x\)
\(g,\dfrac{1}{2}x+\dfrac{5}{6}=\dfrac{3}{4}x-\dfrac{1}{2}\)
\(h,x-4=\dfrac{5}{6}\left(6-\dfrac{6}{5}x\right)\)
\(k,7x^2-11=6x^2-2\)
\(m,5\left(x+3.2^3\right)=10^2\)
\(n,\dfrac{4}{9}-(\dfrac{1}{6^2})=\dfrac{2}{3}\left(x-\dfrac{2}{3}\right)^2+\dfrac{5}{12}\)
Tìm x :
1) \(\left(-0,75x+\dfrac{5}{2}\right).\dfrac{4}{7}-\left(-\dfrac{1}{3}\right)=-\dfrac{5}{6}\)
2) \(\left(4x-9\right)\left(2,5+\dfrac{-7}{3}x\right)=0\)
3) \(\left|x-\dfrac{3}{4}\right|-\dfrac{1}{2}=0\)
4)\(\left(\dfrac{3}{5}-\dfrac{2}{3}x\right)^3=\dfrac{-64}{125}\)
a dfrac{-4}{7} - dfrac{5}{13} x dfrac{-39}{25} + dfrac{-1}{42} : dfrac{-5}{6}b dfrac{2}{9} x [dfrac{4}{45}: ( dfrac{1}{5} - dfrac{2}{15}) + 1dfrac{2}{3}] - dfrac{-5}{27}
Đọc tiếp
a \(\dfrac{-4}{7}\) - \(\dfrac{5}{13}\) x \(\dfrac{-39}{25}\) + \(\dfrac{-1}{42}\) : \(\dfrac{-5}{6}\)
b \(\dfrac{2}{9}\) x [\(\dfrac{4}{45}\): ( \(\dfrac{1}{5}\) - \(\dfrac{2}{15}\)) + 1\(\dfrac{2}{3}\)] - \(\dfrac{-5}{27}\)
\(b,\dfrac{x}{2}-\left(\dfrac{3x}{5}-\dfrac{13}{5}\right)=-\left(\dfrac{7}{5}+\dfrac{7}{10}.x\right)\)
\(c,\dfrac{2x-3}{3}+\dfrac{-3}{2}=\dfrac{5-3x}{6}-\dfrac{1}{3}\)
\(d,\dfrac{2}{3x}-\dfrac{3}{12}=\dfrac{4}{5}-\left(\dfrac{7}{x}-2\right)\)
\(e,2\left(x-1\right)=\left(x-1\right)^2\)
Tìm x:
a) dfrac{11}{12} - (dfrac{2}{5} + dfrac{3}{4}x) dfrac{2}{3}
b) dfrac{-2}{5} + dfrac{5}{3} . (dfrac{3}{2} - dfrac{4}{15}x) dfrac{-7}{6}
c) dfrac{1}{2} + dfrac{3}{4}x dfrac{1}{4}
Đọc tiếp
Tìm x:
a) \(\dfrac{11}{12}\) - (\(\dfrac{2}{5}\) + \(\dfrac{3}{4}\)x) \(\dfrac{2}{3}\)
b) \(\dfrac{-2}{5}\) + \(\dfrac{5}{3}\) . (\(\dfrac{3}{2}\) - \(\dfrac{4}{15}\)x) = \(\dfrac{-7}{6}\)
c) \(\dfrac{1}{2}\) + \(\dfrac{3}{4}\)x = \(\dfrac{1}{4}\)
Giải các phương trình sau:
a) \(\dfrac{1}{2x-6}+\dfrac{3x-10}{x^2-4x+3}=\dfrac{7}{2}\)
b) \(\dfrac{x-1}{x-2}+\dfrac{x+3}{x-4}=\dfrac{2}{\left(x-2\right)\left(4-x\right)}\)
Bài 4: tìm x:a) dfrac{4}{3} + (1,25 - x) 2,25b) dfrac{17}{6} - (x - dfrac{7}{6} ) dfrac{7}{4}c) 4 - (2x + 1) 3 - dfrac{1}{3}bài 15:a) (dfrac{-2}{3})9 : x (dfrac{-2}{3})b) x : (dfrac{4}{9})5 (dfrac{4}{9})4c) (x + 4)3 -125d) (10 - 5x)3 64e) (4x + 5)2 81Bài 16:a) 4 - 1dfrac{2}{5} - dfrac{8}{3}b) -0,6 - dfrac{-4}{9} - dfrac{16}{15}c) -dfrac{15}{4} . (dfrac{-7}{15}) . (-2dfrac{2}{5}Gi ải gấp giúp mình ạ, mình rất cần gấp
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Bài 4: tìm x:
a) \(\dfrac{4}{3}\) + (1,25 - x) = 2,25
b) \(\dfrac{17}{6}\) - (x - \(\dfrac{7}{6}\) ) = \(\dfrac{7}{4}\)
c) 4 - (2x + 1) = 3 - \(\dfrac{1}{3}\)
bài 15:
a) (\(\dfrac{-2}{3}\))9 : x = (\(\dfrac{-2}{3}\))
b) x : (\(\dfrac{4}{9}\))5 = (\(\dfrac{4}{9}\))4
c) (x + 4)3 = -125
d) (10 - 5x)3 = 64
e) (4x + 5)2 = 81
Bài 16:
a) 4 - \(1\dfrac{2}{5}\) - \(\dfrac{8}{3}\)
b) -0,6 - \(\dfrac{-4}{9}\) - \(\dfrac{16}{15}\)
c) \(-\dfrac{15}{4}\) . (\(\dfrac{-7}{15}\)) . (\(-2\dfrac{2}{5}\)
Gi ải gấp giúp mình ạ, mình rất cần gấp