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x-0,25x=po 1 obniżce
x-0,25-0,25(x-0,25x)= po 2 obniżce
x-0,25x-(0,25(x-0,25x))= 101,25
x-0,25x-(o,25x-0,0625x)=101,25
x-0,25x-0,1875x=101,25
0,75x-o,1875x=101,25
0,5625x=101,25
x=180