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I used 2/5 of my money in one store and 1/3 of what remained in a second store. If I had exactly 56 pesos left how much money did I have at first?

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Joecelid
First, subtract the denominator to the numerator ( 3 - 1 = 2    5 - 2 = 3 )
Then do this.

56 × 3 = 168
168 ÷ 2 = 84
84 × 5 = 420
420 ÷ 3 = 140

She have 140 pesos at first.

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