Предмет: Математика, автор: palich1

0.9х-7.4=-0.4х+4.3
Укажите число, если 0.3 его равны корню уравнения

Ответы

Автор ответа: Аноним

0

0.9х-7.4=-0.4х+4.3
0,9х+0,4х=4,3+7,4
1,3х=11,7
х=11,7 :1,3
х=9
Теперь найдем число, если известно, что 0,3 от него равны 9.
9:3*10=30
Ответ:30

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