Автор - rstak1954

решите пж.............. ​

Ответ

Автор - GameFixcs

Ответ:

-14,2x+12.5y

Объяснение:

-(18x+7.5y)+(3.8x+20y)=-18x-7.5y+3.8x+20y=-14,2x+12.5y

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