Question

what number should be added to -7/9 so as to get -5/3?​

Answer 1

Answer:

- 42/45

Step-by-step explanation:

-4/9 + -5/3

-21/ -45 + -21/ -45

= -21+(-21)/45

= -21 + -21 /45

= -21 -21 /45

= +42/45

Answer 2

$\Huge\tt\color{red}{Answer:}$

$\begin{gathered} \tt Let \: the \: unknown \: number \: be : \: \: x \\ \\ \tt \frac{ - 7}{9} + x = \frac{ - 5}{3} \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt \implies x = \frac{ - 5}{3} - \bigg( \frac{ -7 }{9} \bigg) \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt \implies x = \frac{ - 15 + 7}{9} \: \: \: (LCM = 9) \\ \\ \tt \implies x = \color{red}{ \underline{ \boxed{ \bf \frac{ - 8}{9} }}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \end{gathered}$

$\begin{gathered} \therefore \tt \frac{ - 8}{9} \: should \: be \: added \: to \: \frac{ - 7}{9} \: \\ \tt to \: get \frac{ - 5}{3} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \end{gathered} </p><p>$