August 2022 1 9 Report
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[tex]( \frac{a}{ {b}^{2} } - \frac{1}{a} ) \div ( \frac{1}{a} + \frac{1}{b} ) \: .[/tex]


[tex]1) \: \frac{a + y}{b} [/tex]

[tex]2) \: \frac{a - b}{b} [/tex]

[tex]3) \: \frac{a + b}{a} [/tex]

[tex]4) \: \frac{a - b}{a} [/tex]
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