Предмет: Математика, автор: Musabekovaaizhan

помогите с уравнением номер 7​

Приложения:

Ответы

Автор ответа: lxvepeep
3

Ответ:

1.) 0,82 или 82/100; 2.) 25/90

Пошаговое объяснение:

1.)

8/100+х=34/100+56/100

х=34/100+56/100-8/100

х=(34+56-8)/100

х=(90-8)/100

х=82/100 или 0,82

2.)

60/90-(6/90+х)=29/90

60/90-6/90-х=29/90 (знаки меняются на противоположные)

(60-6)/90-х=29/90

54/90-х=29/90

-х=29/90-54/90

х=54/90-29/90

х=25/90

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