Odpowiedź:
a) (4pr-p+3)+(-pr-p-8)= 4pr-p+3-pr-p-8=3pr-2p-5
b) -(5xy-x+8)+(6-3x+xy)=-5xy+x-8+6-3x+xy= -4xy-2x-2
c) (2a+3b-4c+5d)-(a-7b+2c-6d)= 2a+3b-4c+5d-a+7b-2c+6d=a+10b-6c+11d
Liczę na naj ;)
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Odpowiedź:
a) (4pr-p+3)+(-pr-p-8)= 4pr-p+3-pr-p-8=3pr-2p-5
b) -(5xy-x+8)+(6-3x+xy)=-5xy+x-8+6-3x+xy= -4xy-2x-2
c) (2a+3b-4c+5d)-(a-7b+2c-6d)= 2a+3b-4c+5d-a+7b-2c+6d=a+10b-6c+11d
Liczę na naj ;)