William had some Pen. James took 42 from him. Now William has 83 Pen. How many Pen William had initially?
لدي وليام بعض الاقلام. أخذ جيمس 42 قلم منه. الآن وليام لديه 83 قلم. كم عدد الاقلام وليام في البداية؟