August 2018 1 11 Report
Wykonaj działania i oblicz wartość liczbową wyrażenia.

a) 4 (y - 3) - 3 (x + 1) dla x = 4 y = 2

b) 3 (2b + 1) - 4 (a - 2) dla x = 7 y = 2

c) 9 (x - 7y) - (5y - 2x) + 20y dla x = 0,5 y = 0,3

d) (5x + 7y) - 8 (y + 1) + 3 (x - y) dla x = ½ y = ¼
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