x- cena gitary
y-cena wzmacniacza
x+y=1500
1,1x+0,85y=1500
x=1500-y
1,1(1500-y)+0,85y=1500
1650-1,1y+0,85y=1500
0,25y=150
y=600
x=1500-600=900
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x- cena gitary
y-cena wzmacniacza
x+y=1500
1,1x+0,85y=1500
x=1500-y
1,1(1500-y)+0,85y=1500
1650-1,1y+0,85y=1500
0,25y=150
y=600
x=1500-600=900