ta có:
\(x:\frac{9}{14}=\frac{7}{3}:x\)
\(\Rightarrow\frac{14x}{9}=\frac{7}{3x}\)
\(\Rightarrow42x^2=63\)
\(\Rightarrow x^2=\frac{3}{2}\)
\(\Rightarrow x=\sqrt{\frac{3}{2}}\)
chúc bn hok tốt
\(x:\frac{9}{14}=\frac{7}{3}:x\)
\(\Leftrightarrow\)\(\frac{14x}{9}=\frac{7}{3x}\)
\(\Leftrightarrow\)\(42x^2=63\)
\(\Leftrightarrow\) x2 = \(\frac{63}{42}\)
\(\Leftrightarrow\)\(x=\sqrt{\frac{63}{42}}\)
\(x:\frac{9}{14}=\frac{7}{3}:x\)
\(\frac{14x}{9}=\frac{7}{3x}\)
\(42x^2=63\)
\(x^2=\frac{63}{42}\)
\(x=\sqrt{\frac{63}{42}}=\sqrt{\frac{3}{2}}\)
\(x:\frac{9}{14}=\frac{7}{3}:x\)
\(\Rightarrow\frac{x}{1}:\frac{9}{14}=\frac{7}{3}:\frac{x}{1}\)
\(\Rightarrow\frac{x}{1}.\frac{14}{9}=\frac{7}{3}.\frac{1}{x}\)
\(\Rightarrow\frac{x14}{9}=\frac{7}{3x}\)
\(\Rightarrow x14.3x=9.7\)
\(\Rightarrow x14.3x=63\)
\(\Rightarrow x.42.x=63\)
\(\Rightarrow x^2.42=63\)
\(\Rightarrow x^2=63:42\)
\(\Rightarrow x^2=\frac{3}{2}\)
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