Предмет: Математика, автор: ILYAKING007

75-960/(b+39)=55 чему равно b?

Ответы

Автор ответа: nikaluston

0

75-960:(b+39)=55
960:(b+39)=75-55
960:(b+39)=20
b+39=960:20
b+39=48
b=48-39
b=9

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