August 2018 2 7 Report
1. Usuń nawiasy i wykonaj redukcję wyrazów podobnych:
(0,5xy²-1,2y²+5)+(-0,8y²-2,5xy²-2⅛)
2. Wykonaj odejmowania:
a) (6a²+2a+1)-(-3a²-2a+5)
b) (12½m²-1¼n²-1,6)-(2¼m²+3¾n²+2,4)
c) (1,5x²y-¾x²-15)-(⅖x²y-2⅔-⅛x²)
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