Предмет: Математика, автор: света581

решите уровнение

а)(х-7,9)+9/7=29,3
б)х÷7 1/3 = 6:1,1

Ответы

Автор ответа: ramit08

0

а)(х-7,9)+9/7=29,3
х-7,9=29,3-9/7
х=293/10-9/7+79/10
x=293*7/70-90/70+79*7/70
x=(2051-90+553)/70
x=2514/70

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