Предмет: Математика, автор: grigorev2

помогите пожалуйста надо найти X 8×(36+X)=1288

Приложения:

Ответы

Автор ответа: lale2002
0
1288:8 будет 161
161- 36 будет 125
Автор ответа: grigorev2
0
извините но это не правельно
Автор ответа: Олесунька
0
соглашусь с вами
Автор ответа: lale2002
0
я думаю что все правильно
Автор ответа: Олесунька
0
1) 8(36+х)=1288
288+8х=1288
8х=1288-288
8х=1000
х=1000:8
х=125
2) (х+20)10=700
10х+200=700
10х=700-200
10х=500
х=500:10
х=50
3) а+а+2а=4а
а=80
4а=4х(умножить)80=320
4) 2х+х=3х
3х=3х(умножить)25=75

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