x-zarobki
y-wydatki
3x-5y=6000
5x-9y=6000
y=-1200+ x
5x+10800-5,4x=6000
-0,4x=-4800
x=12000
y=-1200+7200
y=6000
Odp. Elżbieta zarabiała 60000zl a Irena 36000zl .
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x-zarobki
y-wydatki
3x-5y=6000
5x-9y=6000
y=-1200+ x
5x+10800-5,4x=6000
-0,4x=-4800
x=12000
y=-1200+7200
y=6000
Odp. Elżbieta zarabiała 60000zl a Irena 36000zl .