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x+6 dl drugiego
Wedlug inf z zadania
2x+12-20/100(2x+12)_2x+25/100*2x=2x+2x+12
2x+12-40/100x-240/100+2x+1/2x-2x-2x=12
-4/10+1/2x=2,4
1/10x=2,4
x=24/10*10
x=24
Obwod:24+24+30+30=108
Oba prost maja obwodu rowne108