Eva borrowed 1/3 of her savings to her brother, 1/2 of savings spent in the store and 7 euros left. How much did she save?


x =  42 Eur


z=11/31/2=1/6 z x=7 x=7/z=7/16 x=7 6=42 Eurz=1 - 1/3 - 1/2=1/6 \ \\ z \cdot \ x=7 \ \\ x=7 / z=7 / \dfrac{ 1 }{ 6 } \ \\ x=7 \cdot \ 6=42 \ \text{Eur}

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