Question

if the product of two rational number is -55/6 and one of them is (-21/5) - 4, find the other number​

Answer 1

simplified version of the number which is multiplied

$\frac{ - 21}{5} - 4 \\ = \frac{ - 21 - 20}{5} = \frac{ - 41}{5}$

thus, second number multiplied is X

$\frac{ - 41 }{5} x = \frac{ - 55}{6 } \\ x = \frac{ - 55}{6} \times \ \frac{5}{ - 41} = \\ \frac{275}{246}$

hence derived