(3/4一3/16)X(2/9十1/3)

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(3/4一3/16)X(2/9十1/3)(3/4一3/16)X(2/9十1/3)(3/4一3/16)X(2/9十1/3) 

(3/4一3/16)X(2/9十1/3)
(3/4一3/16)X(2/9十1/3)

(3/4一3/16)X(2/9十1/3)