Question

The product of two rational numbers is minus 15 by 28 if one of them is minus 18 by 7 , find the other

Answer 1

$let \: the \: unknown \: number \: be \: x \\ \\then \\ \frac{ - 18}{7} \times x = \frac{ - 15}{28} \\ \\ x = \frac{ - 15}{28} \div \frac{ - 18}{7} = \frac{ - 15}{28} \times \frac{7}{ - 18} \\ \\ x = \frac{15}{4 \times 18} = \frac{15}{72} = \frac{5}{24}$

Answer 2

answer is 15/72
one of the
let assume another no as x
product of two no = -15/28
(x)(-18/7)= -15/28
x = -15×7/-18×28
x = 15/18×4
x = 15/ 72
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