January 2019 1 13 Report
Rozwiąż układ równań metodą podstawiania.
a)
x-3y= -7
5x-2y= -22
b)
10x+y=7
4x+3y= -5
c)
10x-11y=10
x+12y=1
d)
-3x-4y= -7
6x-y=32

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