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Tìm x, biết:
a) \(\dfrac{2}{3}\)x - \(\dfrac{2}{5}\) = \(\dfrac{1}{2}\)x - \(\dfrac{1}{3}\)
b) \(\dfrac{1}{3}\)x + \(\dfrac{2}{5}\) . (x + 1) = 0
Tìm các số hữu tỉ x, biết :
a)\(\dfrac{-5}{x-3}\)<0
b)\(\dfrac{3-x}{x^2+1}\)≥0
c)\(\dfrac{\left(x-1\right)^2}{x-2}\)<0
tìm x \(\in\) Q biết rằng
\(\dfrac{11}{12}\) - ( \(\dfrac{2}{5}\) + x ) = \(\dfrac{2}{3}\)
2x \(\times\) ( x - \(\dfrac{1}{7}\) ) = 0
\(\dfrac{3}{4}\) + \(\dfrac{1}{4}\) : x = \(\dfrac{2}{5}\)
Tìm x, biết:
\(\dfrac{1}{2}x+\dfrac{4}{5}=2x-\dfrac{8}{5}\)
\(\sqrt{x}=5\) (x ≥ 0)
x2 = 3
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)\(\left(\dfrac{3}{5}-\dfrac{2}{3}x\right)^3=\dfrac{-64}{125}\)
Giúp mình vớiiiii ! Mình cảm ơn !
Tìm x,y biết : \(\dfrac{x}{4}\) = \(\dfrac{2y+1}{3}\) = \(\dfrac{x-2y-1}{y}\) ( với y ≠ 0 )
Tìm x biết:
|x + \(\dfrac{1}{3}\)| + |x + \(\dfrac{2}{3}\)| + |x + \(\dfrac{2}{5}\)| + |x + \(\dfrac{3}{2}\)| = 33x
Tìm x, biết:
\(\dfrac{1}{2}\)x + \(2\dfrac{1}{2}\) = \(3\dfrac{1}{2}\)x . \(-\dfrac{1}{3}\)
