Rozwiąż rownanie
1,08*a + 1,07* ( 40 000 - a) = 52 532,72
1,08a+1,07(40000-a)=52532,72 /*100
108a+107(40000-a)=5253272
108a+4280000-107a=5253272 /-4280000
a=973272
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1,08a+1,07(40000-a)=52532,72 /*100
108a+107(40000-a)=5253272
108a+4280000-107a=5253272 /-4280000
a=973272