Question

74/111=a/87. Tìm a?

Answer 1

Ta có:\(\frac{74}{111}=\frac{74:37}{111:37}=\frac{2}{3}=\frac{2x28}{3x28}=\frac{58}{87}\)

Vậy a=58

Answer 2

87 X 74:111 la ra

Answer 3

Ta có:\(\frac{74}{111}=\frac{a}{87}\)

            74.87=a.111

             6438=a.111

              a=6438:111

              a=58

Vậy a=58

Answer 4

a= 58

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