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5(3y-4)-(4-3y)(x+1) va rog ajutati-ma


Răspuns :

Faci calculul,desfăcand parantezele:
15y-20-(4x+4-3xy-3y)
15y-20-4x-4+3xy+3y=12y-4x+3xy-24
5(3y-4)-(4-3y)(x+1)=15y-20-(4x+4-3xy-3y)=15y-20-4x+3y+3xy-4=-4x+18y+3xy-24