September 2018 2 39 Report
A) 2x-2y=7
4x+3y=21

b) 0,4x+0,3y=1,4
0,1x+3y =2,3

c) 1/2x-3/4y=0
2/3x+1 1/4y=9

Jeśli ktoś umie np. a) a b) i c) nie umie to też niech pisze thx. :)
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