Предмет: Математика, автор: stegniydima

найти корень уравнения: -1,9+0,5(7-3b)=(6-4b)-0,4

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Автор ответа: Listvichka177

0

-1,9+0,5(7-3b)=(6-4b)-0,4

-1,9+3,5-1,5b=6-4b-0,4

1,6-1,5b=5,6-4b

2,5b=4 |:2,5

b=1,6

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