(51-17/3)*3/17简便方法,7/17*5/28+7/17*23/28
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![(51-17/3)*3/17简便方法,7/17*5/28+7/17*23/28](/uploads/image/z/305735-23-5.jpg?t=%EF%BC%8851-17%2F3%EF%BC%89%2A3%2F17%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%2C7%2F17%2A5%2F28%2B7%2F17%2A23%2F28)
(51-17/3)*3/17简便方法,7/17*5/28+7/17*23/28
(51-17/3)*3/17简便方法,7/17*5/28+7/17*23/28
(51-17/3)*3/17简便方法,7/17*5/28+7/17*23/28
(51-17/3)*3/17
=51×3/17+17/3×3/17
=3×3+1
=10;
简便方法,7/17*5/28+7/17*23/28
=(7/17)×(5/28+23/28)
=7/17;
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