Вопрос школьника по предмету Математика
Решите уравнение
5,5/(3x)=11/27
(x-7)/3,2=1
1,3*(7-x)=0,39
2,8*(31-x)=14,28
Решите пожалуйста дам 50 баллов!
Ответ учителя по предмету Математика
5,5/3х=11/27
3х=5 1/2 : 11/27=11/2 ×27/11 (сокр. Дроби)
3х=1/2 ×27
3х=13 1/2
Х=27/2 :3=27/2 × 1/3
Х=9/2=4,5
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