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3x+2/ 4 - y-3/2=5 /*8
5x+2y=4
2(3x+2) - 4(y-3) = 40
5x + 2y= 4
6x+4 - 4y+12 = 40
5x+2y=4
6x - 4y = 40 - 12 - 4
5x+2y=4 / * 2
6x - 4y = 24
10x + 4y = 8
6x - 4y = 24
16x = 32
x=2
rownanie rozwiazywane metoda przeciwnych wspolczynnikow : ))
powinno byc dobrze ;d