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(D) For equation $I$:$\frac{12 	imes 4}{x^{4/7}} - \frac{3 	imes 4}{x^{4/7}} = x^{10/7}$$\Rightarrow \frac{48}{x^{4/7}} - \frac{12}{x^{4/7}} = x^{10

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$x \leq y$

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(D) For equation $I$:$\frac{12 	imes 4}{x^{4/7}} - \frac{3 	imes 4}{x^{4/7}} = x^{10/7}$$\Rightarrow \frac{48}{x^{4/7}} - \frac{12}{x^{4/7}} = x^{10/7}$$\Rightarrow \frac{36}{x^{4/7}} = x^{10/7}$$\Rightarrow 36 = x^{10/7} 	imes x^{4/7}$$\Rightarrow 36 = x^{(10+4)/7} = x^{14/7} = x^2$$\Rightarrow x^2 = 36$$	herefore x = 6$ or $x = -6$For equation $II$:$y^3 + 783 = 999$$\Rightarrow y^3 = 999 - 783$$\Rightarrow y^3 = 216$$	herefore y = \sqrt[3]{216} = 6$Comparing the values:If $x = 6$,then $x = y$.If $x = -6$,then $x Combining these,we get $x \leq y$.

Solve the given two equations and select the correct answer from the given options.
$I.$ $\frac{12 \times 4}{x^{4/7}} - \frac{3 \times 4}{x^{4/7}} = x^{10/7}$
$II.$ $y^3 + 783 = 999$

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Solve the given two equations and select the correct answer from the given options.$I.$ $\frac{12 \times 4}{x^{4/7}} - \frac{3 \times 4}{x^{4/7}} = x^{10/7}$$II.$ $y^3 + 783 = 999$