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![\begin{array}{rcll}x \left (\dfrac{4}{9} \right )^{-5} & = & \left (\dfrac{2}{3} \right )^{-2}&\\\\x \left [\left (\dfrac{2}{3} \right )^{2} \right ]^{-5} & = & \left (\dfrac{2}{3} \right )^{-2}&\text{Simplified }\dfrac{4}{9}\\\\x \left (\dfrac{2}{3} \right )^{-10} & = & \left (\dfrac{2}{3} \right )^{-2}&\text{ Multiplied exponents}\\\\\end{array}](/tpl/images/0430/1703/a1be2.png)
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By what number (4/9)-5 be multiplied so as to get (2/3)-2...
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