Предмет: Математика, автор: Аноним

как решить уровнение
(k+5)×7-54=(k+5)×4

Ответы

Автор ответа: Aseka18
0
(k+5)×7-54=(k+5)×4
7k+35-54=4k+20
7k-19=4k+20
7k-4k=20+19
3k=39
k=13
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