Предмет: Математика, автор: aplla2402

знайдіть корень рівняньня 10х + 1.5 помножыты (2.3-1.7)=13.9 будласка скоріш да 20б

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Автор ответа: сок111213

$10x + 1.5 \times (2.3 - 1.7) = 13.9 \\ 10x = 13.9 - 1.5 \times 0.6 \\ 10x = 13.9 - 0.9 \\ 10x = 13 \\ x = 13 \div 10 \\ x = 1.3$

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