Предмет: Алгебра, автор: jkz82

помогите пожалуйста, решить уравнение $frac{x-1}{5} = frac{5-x}{2} + frac{3x}{4}$

Ответы

Автор ответа: Аноним

Умножим оба части уравнения на $20$ , получаем:
$4(x-1)=10(5-x)+3xcdot 5\ 4x-4=50-10x+15x\ 4x-4=50+5x$
Известные величины переносим в правую часть, а в левую часть - неизвестные.
$4x-5x=50+4\ x=-54$

Ответ: $-54.$

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