October 2018 2 16 Report

rozwiąż uklady rownan metoda podstawiania

a)

x=2

x+y=5

b)

x=-1

2x+4y=2

c)

x-y=-1

-2x+y=-4

d)

x+y=4

x-y=1

e)

x+y=6

y+5=6


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