Quando escrevemos o número 0,35 na forma de fração simplificada, obtemos uma fração da forma A/B, onde A é o numerador e B é denominador. É correto afirmar que B - A vale: A) 21

B) 11

C) 25

D) 13

E) 20

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The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

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