Tìm x trong tỉ lệ thức
a) \(-0,52:x=-9,36:16,38\)
b) \(2\dfrac{2}{5}:x=1\dfrac{7}{9}:0,2\)
c)\(\left(\dfrac{2}{5}x\right):\dfrac{1}{3}=1\dfrac{1}{3}:\dfrac{4}{5}\)
d) \(0,3:1\dfrac{1}{3}=\dfrac{2}{5}:\left(3x+6\right)\)
e) \(\dfrac{x}{-15}=\dfrac{-60}{x}\)
f) \(\dfrac{x-1}{-15}=\dfrac{-60}{x-1}\)
g) \(\dfrac{x-1}{7}=\dfrac{9}{x+1}\)
h) \(\dfrac{x-2}{x-1}=\dfrac{x+4}{x+7}\)
Tìm x trong tỉ lệ thức
a) −0,52 : x = −9,36 : 16,38
\(\dfrac{-0.52}{x}=\dfrac{-9.36}{16.38}=-\dfrac{4}{7}\\ \Rightarrow x=\dfrac{7.\left(-0.52\right)}{-4}=\dfrac{91}{100}=0.91\)
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