হিসাব কর:

$$\begin{gathered} =\frac{৪+৩}{৬} \\ =\frac{৭}{৬} \\ =১\frac{১}{৬} \end{gathered}$$

$$\begin{gathered} ১\frac{২}{৩}+২\frac{২}{৩} \\ =\frac{৩\times ১+২}{৩}+\frac{৩\times ২+২}{৩} \\ =\frac{৩+২}{৩}+\frac{৬+২}{৩} \\ =\frac{৫}{৩}+\frac{৮}{৩} \\ =\frac{৫+৮}{৩} \\ =\frac{১৩}{৩} \\ =৪\frac{১}{৩} \end{gathered}$$

$$\begin{gathered} \frac{৫}{৬}+\frac{৩}{৬} \\ =\frac{৫+৩}{৬} \\ =\frac{৮}{৬} \\ =\frac{৪}{৩} \\ =১\frac{১}{৩} \end{gathered}$$

$$\begin{gathered} \frac{৬}{৪}+\frac{১}{৪} \\ =\frac{৬+১}{৪} \\ =\frac{৭}{৪} \\ =১\frac{৩}{৪} \end{gathered}$$

$$\begin{gathered} \frac{১}{৩}+\frac{৪}{৫} \\ =\frac{৫}{১৫}+\frac{১২}{১৫} \\ =\frac{৫+১২}{১৫} \\ =\frac{১৭}{১৫} \\ =১\frac{২}{১৫} \end{gathered}$$

$$\begin{gathered} ১\frac{১}{৩}+\frac{১}{৬} \\ =\frac{৩\times ১+১}{৩} +\frac{১}{৬} \\ =\frac{৪}{৩}+\frac{১}{৬} \\ =\frac{৮}{৬}+\frac{১}{৬} \\ =\frac{৮+১}{৬} \\ =\frac{৯}{৬} \\ =\frac{৩}{২} \end{gathered}$$

$$\begin{gathered} \frac{৪}{১৫}+১\frac{১}{১২} \\ =\frac{৪}{১৫}+\frac{১২\times ১+১}{১২} \\ =\frac{৪}{১৫}+\frac{১৩}{১২} \\ =\frac{১৬}{৬০}+\frac{৬৫}{৬০} \\ =\frac{১৬+৬৫}{৬০} \\ =\frac{৮৬}{৬০} \\ =\frac{২৭}{২০} \\ =১\frac{৭}{২০} \end{gathered}$$

$$\begin{gathered} ১\frac{৭}{১৫}+\frac{৩}{৫} \\ =\frac{১৫\times ১+৭}{১৫}+\frac{৩}{৫} \\ =\frac{২২}{১৫}+\frac{৩}{৫} \\ =\frac{২২+৯}{১৫} \\ =\frac{৩১}{১৫} \\ =২\frac{১}{১৫} \end{gathered}$$

$$\begin{gathered} \frac{৮}{৭}-\frac{৫}{৭} \\ =\frac{৮-৫}{৭} \\ =\frac{৩}{৭} \end{gathered}$$

$$\begin{gathered} ১\frac{২}{৫}-\frac{৪}{৫} \\ =\frac{৫\times ১+২}{৫}-\frac{৪}{৫} \\ =\frac{৫+২}{৫}-\frac{৪}{৫} \\ =\frac{৭}{৫}-\frac{৪}{৫} \\ =\frac{৭-৪}{৫} \\ =\frac{৩}{৫} \end{gathered}$$

$$\begin{gathered} ৩-\frac{৩}{৪} \\ =\frac{১২}{৪}-\frac{৩}{৪} \\ =\frac{১২-৩}{৪} \\ =\frac{৯}{৪} \\ =২\frac{১}{৪} \end{gathered}$$

$$\begin{gathered} \frac{৭}{৬}-\frac{১}{৪} \\ =\frac{১৪}{১২}-\frac{৩}{১২} \\ =\frac{১৪-৩}{১২} \\ =\frac{১১}{১২} \end{gathered}$$

$$\begin{gathered} ২\frac{২}{৩}-\frac{৪}{৫} \\ =\frac{৩\times ২+২}{৩}-\frac{৪}{৫} \\ =\frac{৬+২}{৩}-\frac{৪}{৫} \\ =\frac{৮}{৩}-\frac{৪}{৫} \\ =\frac{৪০}{১৫}-\frac{১২}{১৫} \\ =\frac{৪০-১২}{১৫} \\ =\frac{২৮}{১৫} \\ =১\frac{১৩}{১৫} \end{gathered}$$

$$\begin{gathered} ২\frac{১}{৩}-\frac{৮}{১৫} \\ =\frac{৩\times ২+১}{৩} -\frac{৮}{১৫} \\ =\frac{৬+১}{৩}-\frac{৮}{১৫} \\ =\frac{৭}{৩}-\frac{৮}{১৫} \\ =\frac{৩৫}{১৫}-\frac{৮}{১৫} \\ =\frac{৩৫-৮}{১৫} \\ =\frac{২৭}{১৫} \\ =\frac{৯}{৫} \\ =১\frac{৪}{৫} \end{gathered}$$

$$\begin{gathered} ৩\frac{৭}{১২}-১\frac{৫}{৬} \\ =\frac{১২\times ৩+৭}{১২} - \frac{৬\times ১+৫}{৬} \\ =\frac{৩৬+৭}{১২}-\frac{৬+৫}{৬} \\ =\frac{৪৩}{১২}-\frac{১১}{৬} \\ =\frac{৪৩}{১২}-\frac{২২}{১২} \\ =\frac{৪৩-২২}{১২} \\ =\frac{২১}{১২} \\ =\frac{৭}{৪} \\ =১\frac{৩}{৪} \end{gathered}$$