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3kl.gim.

Rozwiąz podane układy równań i określ jakiego są typu

a)x+y+4=0

2(y-3)=3(y+1)

b)5x+4y=-7

4x+5=-2

c) 2(x+y)-3(x+2)=2

2(y+2)+1=2x-3(x-y)


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