Предмет: Математика, автор: sofika114

рівняння допоможіть будь ласка

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Ответы

Автор ответа: ildar502020

1

Ответ: 20.

Пошаговое объяснение:

(2y-11)/0.4 = (3.5+2y)/0.6;

0.6(2y-11) = 0.4(3.5+2y);

1.2y - 6.6 = 1.4 + 0.8y;

1.2y-0.8y = 1.4+6.6;

0.4y = 8;

y=8:0.4;

y=20.

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