# Solution plzz all

$\left(ii\right)\frac{64}{-20}\phantom{\rule{0ex}{0ex}}Inordertoexpressitins\mathrm{tan}dardform,wedivideitsnumeratoranddenominatorbythegreatestcommondivisorof64and20is4.\phantom{\rule{0ex}{0ex}}\frac{-64\xf74}{20\xf74}=\frac{\mathbf{-}\mathbf{16}}{\mathbf{5}}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(iii\right)\frac{-27}{-15}=\frac{-27\xf73}{-15\xf73}=\frac{\mathbf{9}}{\mathbf{5}}$

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