Предмет: Математика, автор: dr0nov2007

2(0,7х-2)-5(-0,2х+4)=0 помогите пж

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Автор ответа: сок111213

1

$2(0.7x - 2) - 5( - 0.2x + 4) = 0 \\ 1.4x - 4 + x - 20 = 0 \\ 2.4x = 24 \\ x = 24 \div 2.4 \\ = 10$

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