$$A = \left(-\frac{7}{5} - \frac{1}{11}\right) - \left(\frac{3}{10} - \frac{1}{11}\right)$$
$$B = \left(\frac{5}{12} + \frac{1}{100}\right) - \left(-\frac{5}{18} + \frac{1}{100}\right)$$
$$C = \left(\frac{17}{5} + \frac{4}{7} - \frac{2}{3}\right) - \left(\frac{4}{7} + \frac{3}{2} - \frac{2}{3}\right)$$
$$D = -\frac{13}{15} - \left(\frac{2}{5} + \frac{1}{7}\right)$$
✨ الحل التفصيلي
$$\begin{align}
A &= \left(-\frac{7}{5} - \frac{1}{11}\right) - \left(\frac{3}{10} - \frac{1}{11}\right)\\
&= -\frac{7}{5} - \frac{1}{11} - \frac{3}{10} + \frac{1}{11}\\
&= -\frac{7}{5} - \frac{3}{10}\\
&= -\frac{14}{10} - \frac{3}{10} = -\frac{17}{10}
\end{align}$$
$$\begin{align}
B &= \left(\frac{5}{12} + \frac{1}{100}\right) - \left(-\frac{5}{18} + \frac{1}{100}\right)\\
&= \frac{5}{12} + \frac{1}{100} + \frac{5}{18} - \frac{1}{100}\\
&= \frac{5}{12} + \frac{5}{18}\\
&= \frac{15}{36} + \frac{10}{36} = \frac{25}{36}
\end{align}$$
$$\begin{align}
C &= \left(\frac{17}{5} + \frac{4}{7} - \frac{2}{3}\right) - \left(\frac{4}{7} + \frac{3}{2} - \frac{2}{3}\right)\\
&= \frac{17}{5} + \frac{4}{7} - \frac{2}{3} - \frac{4}{7} - \frac{3}{2} + \frac{2}{3}\\
&= \frac{17}{5} - \frac{3}{2}\\
&= \frac{34}{10} - \frac{15}{10} = \frac{19}{10}
\end{align}$$
$$\begin{align}
D &= -\frac{13}{15} - \left(\frac{2}{5} + \frac{1}{7}\right)\\
&= -\frac{13}{15} - \frac{2}{5} - \frac{1}{7}\\
&= -\frac{91}{105} - \frac{42}{105} - \frac{15}{105}\\
&= -\frac{148}{105}
\end{align}$$