Предмет: Математика, автор: veronikakazban

Помогите пожалуйста пожалуйста помогите!!! Розв'яжіть рівняння.
А)15х+10х=75
Б)(х-3)(7-х)=0
Помогите пожалуйста пожалуйста помогите

Ответы

Автор ответа: aleksejaremuta
0

Пошаговое объяснение:

А) 15х+10х=75

25х=75

х=75:25

х=3

Б)(х-3)(7-х)=0

не знаю

Автор ответа: bazarbaevasogdiana
1

Ответ:

а)х=3

б) х (снизу 1) =3

 х(снизу 2) =7

Пошаговое объяснение:

А)15х+10х=75

(так как "15х+10х" буквы одинаковые прибавляем)

25х=75

х=75÷25

х=3

Б) (х-3)(7-х)=0

х-3=0

7-х=0

х=3

х=7

дай лучший ответ пожалуйста!;)

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