الصيغة 1احسب :
\( \left(\dfrac{7}{12}-\dfrac{39}{683}\right)-\left(\dfrac{1}{2}-\dfrac{39}{683}\right) \)
✅ التصحيح
بتطبيق: (a-c)−(b-c) = a−b [c يختصر]
\( \left(\dfrac{7}{12}-\dfrac{39}{683}\right)-\left(\dfrac{1}{2}-\dfrac{39}{683}\right) = \dfrac{7}{12}-\dfrac{1}{2} = \dfrac{1}{12} \)