17/13×1/51等于几分之几?
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解:17/13×1/51等于( 1/39 )
∵已知需求出17/13×1/51等于几
∴17/13×1/51
= 17/13 × 1/(3×17)
= 1/(13×3)
= 1/39
答:17/13×1/51等于1/39
∵已知需求出17/13×1/51等于几
∴17/13×1/51
= 17/13 × 1/(3×17)
= 1/(13×3)
= 1/39
答:17/13×1/51等于1/39
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