Odpowiedź:
(2x-5)(y+6)-2xy +30\
(7-x)(3-y)- xy+7y-14=-3x-7
(6x-1)(4-y)= y - 4+24x-6xy
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Odpowiedź:
(2x-5)(y+6)-2xy +30\
(7-x)(3-y)- xy+7y-14=-3x-7
(6x-1)(4-y)= y - 4+24x-6xy