Question

What number should be added to -5/12 to get -7/9

Answer 1

$Let \: \: the \: \: required \: \: number \: \: be \: \: n$

Then,

$\frac{ - 5}{12} + x = \frac{ - 7}{9} \\ \\ x = \frac{ - 7}{9} - ( \frac{ - 5}{12}) \\ \\ x = \frac{ - 28 - ( - 15)}{36} \\ \\ x = \frac{ - 28 + 15}{36} \\ \\ x = \frac{ - 13}{36}$