Question

16/17×1/46+1/23×9/17的简便方法？

Answer 1

16/17×1/46+1/23×9/17
=8/17×1/23+1/23×9/17
=1/23×（8/17+9/17）
=1/23

Answer 2

解：

16/17×1/46+1/23×9/17

=16×1/17×1/46+2/46×9×1/17

=(16+2×9)×1/17×1/46

=34×1/17×1/46

=2/46=1/23

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