Предмет: Математика, автор: Ксения556

Решите плиз   15*х-11*7=13   звездочка умножить

Ответы

Автор ответа: masha2001
0
15х-11*7=13
(11*7=77)
15х-77=13
15х=77+13
15х=90х
х=90:15
х=6

Автор ответа: olgagercen14
0
15х-77=13
5х=77+13
5х=90
х=90/5
х=18
Автор ответа: masha2001
0
Там должно быть15х, а не 5х
Автор ответа: masha2001
0
ну да, смысл тот же.
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