Question

the product of two rational number is 5 by 18if one of them is -3 by 20 find the other
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Answer 1

$\frac{ - 3}{20} \times x = \frac{5}{18} \\ = > x = \frac{5}{18} \times \frac{20}{ - 3} \\ = > x = \frac{100}{ - 54}$