Question

1/2 - (-5/9) =
A. 6/9
B. 6/18
C. 19/18

Answer 1

19/18

Answer 2

\[\Large \begin{array}{l}
\frac{1}{2} + \frac{5}{9}\\\\
{\text{LCM}}{\text{ of 2 and 9 = 18, so make both denominators 18:}}\\\\
= \frac{{1(9)}}{{2(9)}} + \frac{{5(2)}}{{9(2)}}\\
= \frac{9}{{18}} + \frac{{10}}{{18}}\\
= \frac{{9 + 10}}{{18}}\\
= \frac{{19}}{{18}}
\end{array}\]