December 2018 1 6 Report
Rozwiąż układy równań

a)<x+y=-1
<2x+3y=1

b)<x+y=12
<4x-2y=15
c)
<3x+4y=0
<x+2y=2
d
<3x-y=1
<7x-y=9
e) <y-x=7
<2x-2y=-14
f)
<2x+4y=35
<x-y=1

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