Question

The product of two rational number is –⁹⁄₄. If one of the number is –¹²⁄₇, then the other number is ​

Answer 1

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Let x be the other number

$\longmapsto \sf \frac{ - 12}{7} \times x = \frac{ - 9}{4}$

$\longmapsto \sf x = \frac{ -9 }{4} \times \frac{( - 7)}{12}$

$\longmapsto \sf x = \frac{ -3}{4} \times \frac{( - 7)}{4}$

$\longmapsto \sf x = \frac{21}{16}$