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59) x · 1,16 = 20,88 x = 20,88 / 1,16 = 18 20,88 – 18 = 2,88

27. diapositibaren emaitzak. 1. 59) x · 1,16 = 20,88 x = 20,88 / 1,16 = 18 20,88 – 18 = 2,88. Elastikoak 18 euro balio du . BEZa 2,88 euro da. 60) x · 0,92 = 21 x = 21/0,92 = 22,83. Deskontua baino lehenago, diskoak 22,83 euro balio zuen. 61) (x + 58) · 1,25 · 1,16 = 954,10

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59) x · 1,16 = 20,88 x = 20,88 / 1,16 = 18 20,88 – 18 = 2,88

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  1. 27. diapositibaren emaitzak 1 59) x · 1,16 = 20,88 x = 20,88 / 1,16 = 18 20,88 – 18 = 2,88 Elastikoak 18 euro balio du . BEZa 2,88 euro da 60) x · 0,92 = 21 x = 21/0,92 = 22,83 Deskontua baino lehenago, diskoak 22,83 euro balio zuen. 61) (x + 58) · 1,25 · 1,16 = 954,10 (x + 58) · 1,45 = 954,10 x + 58 = 954,10 / 1,45 x + 58 = 658 x = 658 – 58 = 600 Altzariak, hasieran, 600 euro balio zuen.

  2. 27. diapositibaren emaitzak 2 62) x · 0,4545 = 15 x = 15 / 0,4545 = 33 Nire nebaren gelan, 33 ikasle daude. 63) x · 1,16 = 78,40 x = 78,40 / 1,16 = 67,59 78,40 – 67,59 = 10,81 BEZa baino lehenago, 67,59 euro balio du. Eta BEZa 10,81 euro da. 64) % 100 igo badu, 100 zena 200 bihurtu da; orduan, prezioa bikoiztu egin da. 123,45 x 2 = 246,90 euro % 10 irabaziko du. % 650 irabaziko luke. 65) 80 · x = 88; x = 88 / 80 = 1,10 80 · x = 600; x = 600 / 80 = 7,5

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