August 2018 3 16 Report
Zadanie 10 strona 90
Rozwiąż podane układy równań.
a) W klamrze
4x = 20
y = x + 2

b) W klamrze
x + 10 = 50
y = 2x

c) W klamrze
x = 9 - y
y - 3 = 0


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