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druga liczba a
20%*x+1/10a=220
1/5*x-10%*a=100
2/10*x+1/10*a=220
2/10*x-1/10*a=100
_________________________
4/10*x=320/*10/4
x=800
2/10*800+1/10*a=220
1/10*a=220-160
1/10*a=60/*10
a=600
y - druga liczba
20%x+1/10y=220
1/5x-10%y=100
0,2x+0,1y=220
0,2x-0,1y=100
----------------
0,4x=320
x=800
0,2*800+0,1y=220
0,1y=220-160
0,1y=60
y=600
spr:
20%x+1/10y=220
20%*800+1/10*600=220
0,2*800+0,1*600=220
160+60=220
220=220
odp: Liczy to 800 i 600