Question

find a rational number equivalent to -3 by 8

Answer 1

A ration number equivalent to
$= \frac{ - 3}{8}$
is
$= \frac{ - 6}{16}$ because to find this we just have to multiply the same number with denominator and numerator.

Answer 2

-3/8*2/2=-6/18
-6/18 is a rational equivalent to -3/8