عدد طبيعى لو اضفنا ثلثة الى نصفة واضفنا 5 للمجموع السابق كان الناتج 530؟
الحل:
نفرض ان العدد س
اذن: (1÷3)س+(1÷2)س=(5÷6)س
اذن :
(5÷6)س+5=530
(5÷6)س=530-5
(5÷6)س=525
اذن س=525×6÷5
س=630
اذن العدد هو 630
If we add a third of a natural number to half of it and then add 5 to the sum, the result is 530. The solution is to assume the number is S. Therefore, (1/3)S + (1/2)S + 5 = 530. Simplifying further, (5/6)S + 5 = 530. Substituting, (5/6)S = 525, so S = 525 * 6 / 5 = 630. Therefore, the natural number is 630.