a survey carried by the school social club for the students come by car in school , (x-9)/2 cars carry one kid , under root x carry two students , x/7 carry three students and under root x/7 carrry four tudents if the total number of students is 59 , find the total number of cars used by 59 students .

As the number of student = 59, so we have the equation as:

x-92×1 + x×2 + x7×3 +x7×4 = 59x2-92 +2x+4x7 +3x7 =5913x14 +x(2 +47) =59+9213x14 +187x=1272Or 13x +36x =889Let x = t2, so x= thence 13t2+36t -889 =0Or t =7Or x =7Number of cars can not be in fraction, so please check your question.

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