Ответ:
г)=3x+5-5x+7+4x-13/8x-4=2x/8x-4
д) =7a-8b-6a+7b/b-a=а-b/b-a
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Ответ:
г)=3x+5-5x+7+4x-13/8x-4=2x/8x-4
д) =7a-8b-6a+7b/b-a=а-b/b-a