Предмет: Математика, автор: macuratimofej5

а) 4х + 11х + 21 = 51;

б) 92 + 56 : (14 - х) = 100.

Ответы

Автор ответа: marishashishko

1

а)4х + 11х + 21 = 51;

15x=30, x=2

б) 56:(14-x)=100-92

56:(14-x)=8

56=8*(14-x)

7=14-x

x=7

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