August 2018 1 14 Report
!. Uzasadnij że w każdej ramce zapisano równania równoważnie;
a) 4x=20
2x=10
b) x(2)=25
(x-5)(x+5)=0
c) x(2) +1=0
z+1=x
d)2x=5x-3x
0,5x=x/2

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