x + 5/4 = (3/2)2
x + 5/4 = 9/4
x= 9/4-5/4
x=1
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a) Tìm tập hợp các số nguyên x, biết rằng4dfrac{5}{9}:2dfrac{5}{18}-7 x left(3dfrac{1}{5}:3,2+4,5.1dfrac{31}{45}right):left(-21dfrac{1}{2}right)b) tìm x, biết left|x+dfrac{1}{2}right|+left|x+dfrac{1}{6}right|+left|x+dfrac{1}{12}right|+left|x+dfrac{1}{20}right|+....+left|x+dfrac{1}{110}right|-11xc)Tính gt biểu thức C2x^3-5y^3+2015 tại x,y thỏa mãn left|x-1right|+left(y+2right)^{20}0
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a) Tìm tập hợp các số nguyên x, biết rằng\(4\dfrac{5}{9}:2\dfrac{5}{18}-7< x< \left(3\dfrac{1}{5}:3,2+4,5.1\dfrac{31}{45}\right):\left(-21\dfrac{1}{2}\right)\)
b) tìm x, biết \(\left|x+\dfrac{1}{2}\right|+\left|x+\dfrac{1}{6}\right|+\left|x+\dfrac{1}{12}\right|+\left|x+\dfrac{1}{20}\right|+....+\left|x+\dfrac{1}{110}\right|-11x\)
c)Tính gt biểu thức \(C=2x^3-5y^3+2015\) tại x,y thỏa mãn \(\left|x-1\right|+\left(y+2\right)^{20}=0\)
Tìm x.
\(1,\dfrac{3}{2}\left(x-\dfrac{1}{3}\right)-\dfrac{1}{2}\left(x+\dfrac{1}{2}\right)=\dfrac{1}{4}\)
\(2,3\left(x-2\right)-4\left(x+2\right)=x+2\)
\(3,4x\left(x-1\right)+4x-2\left(x+1\right)=-2\)
\(4,x\left(x+2\right)-3\left(x-1\right)=3\left(x+1\right)\)
Tìm x biết :
a) \(\dfrac{1}{4}x-1+\dfrac{1}{3}\left(\dfrac{5}{2}x-7\right)-\left(\dfrac{5}{8}x-2\right)=\dfrac{7}{2}\)
b) \(\left|2-\dfrac{3}{2}x\right|-4=x+2\)
c) \(-3\left(\dfrac{2}{5}x-\dfrac{1}{5}\right)-x\left(x-\dfrac{1}{2}\right)=\dfrac{1}{6}-x^2\)
Tìm x biết
a) \(\dfrac{-2}{5}+\dfrac{5}{3}\left(\dfrac{3}{2}-\dfrac{4}{15}x\right)=\dfrac{-7}{6}\)
b) \(\left(\dfrac{1}{4}x-1\right)+\left(\dfrac{2}{3}x-2\right)-\left(\dfrac{5}{8}x+1\right)=5\)
Ai nhanh 3 tick nha
Tìm x :
a) dfrac{2x-3}{3}+dfrac{-3}{2}dfrac{5-3x}{6}-dfrac{1}{3}
b) dfrac{2}{3x}-dfrac{3}{12}dfrac{4}{5}-left(dfrac{7}{x}-2right)
c) dfrac{x+2014}{2}+dfrac{2x+4028}{7}dfrac{x+2009}{5}+dfrac{x+2020}{6}
d)dfrac{3}{left(x+2right)left(x+5right)}+dfrac{5}{left(x+5right)left(x+10right)}+dfrac{7}{left(x+10right)left(x+18right)}dfrac{x}{left(x+2right)left(x+17right)}
Help me , bn nào giải đc bài nò thì giải nha !!! ))
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Tìm x :
a) \(\dfrac{2x-3}{3}+\dfrac{-3}{2}=\dfrac{5-3x}{6}-\dfrac{1}{3}\)
b) \(\dfrac{2}{3x}-\dfrac{3}{12}=\dfrac{4}{5}-\left(\dfrac{7}{x}-2\right)\)
c) \(\dfrac{x+2014}{2}+\dfrac{2x+4028}{7}=\dfrac{x+2009}{5}+\dfrac{x+2020}{6}\)
d)\(\dfrac{3}{\left(x+2\right)\left(x+5\right)}+\dfrac{5}{\left(x+5\right)\left(x+10\right)}+\dfrac{7}{\left(x+10\right)\left(x+18\right)}=\dfrac{x}{\left(x+2\right)\left(x+17\right)}\)
Help me , bn nào giải đc bài nò thì giải nha !!! =))
26 tháng 10 2021 lúc 12:36
Tìm x biết :
\(\left|x-\dfrac{1}{2}\right|+\left|x-\dfrac{1}{3}\right|+\left|x-\dfrac{1}{4}\right|+....+\left|x-\dfrac{1}{10}\right|=2x\)
\(\left(\dfrac{3}{4}x+5\right)-\left(\dfrac{2}{3}x-4\right)-\left(\dfrac{1}{6}x+1\right)=\left(\dfrac{1}{3}x+4\right)-\left(\dfrac{1}{3}x-3\right)\)
Tìm x
Tìm x biết:
a) \(\left|x-\dfrac{4}{5}\right|=\dfrac{3}{4}\) ; b) \(6-\left|\dfrac{1}{2}-x\right|=\dfrac{2}{5}\) ; c) \(\left|x+\dfrac{3}{5}\right|-\dfrac{1}{2}=\dfrac{1}{2}\)
a,left|3x-4right|+left|3y+5right|0 b,left|x+dfrac{19}{5}right|+left|y+dfrac{1890}{1975}right|+left|z-2004right|0 c,left|x+dfrac{9}{2}right|+left|y+dfrac{4}{3}right|+left|z+dfrac{7}{2}right|le0
d,left|x+dfrac{3}{4}right|+left|y-dfrac{1}{5}right|+left|x+y+zright|0 e,left|x+dfrac{3}{4}right|+left|y-dfrac{2}{5}right|+left|z+dfrac{1}{2}right|le0
Giups mình giải bài tìm x,y,z này nhé!!! Cảm ơn nhiều ạ!!!
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a,\(\left|3x-4\right|+\left|3y+5\right|=0\) b,\(\left|x+\dfrac{19}{5}\right|+\left|y+\dfrac{1890}{1975}\right|+\left|z-2004\right|=0\) c,\(\left|x+\dfrac{9}{2}\right|+\left|y+\dfrac{4}{3}\right|+\left|z+\dfrac{7}{2}\right|\le0\)
d,\(\left|x+\dfrac{3}{4}\right|+\left|y-\dfrac{1}{5}\right|+\left|x+y+z\right|=0\) e,\(\left|x+\dfrac{3}{4}\right|+\left|y-\dfrac{2}{5}\right|+\left|z+\dfrac{1}{2}\right|\le0\)
Giups mình giải bài tìm x,y,z này nhé!!! Cảm ơn nhiều ạ!!!
Bài 2: Tìm x:a)dfrac{x-1}{27}dfrac{-3}{1-x} c)3times x2times y vàx-2times y8b)dfrac{4}{5}-left|x-dfrac{1}{2}right|dfrac{3}{4} d)dfrac{x-1}{2005}dfrac{3-y}{2006} và x-4009y
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Bài 2: Tìm x:
a)\(\dfrac{x-1}{27}\)=\(\dfrac{-3}{1-x}\) c)\(3\times x=2\times y\) và\(x-2\times y=8\)
b)\(\dfrac{4}{5}\)-\(\left|x-\dfrac{1}{2}\right|\)=\(\dfrac{3}{4}\) d)\(\dfrac{x-1}{2005}\)=\(\dfrac{3-y}{2006}\) và x-4009=y