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①5/6X3/5÷5/8②16/3÷4/5-1/3X3/4③5/8X3/25÷8/5④5/9X2/3-7/18X3/4

题目详情
①5/6X3/5÷5/8②16/3÷4/5-1/3X3/4③5/8X3/25÷8/5④5/9X2/3-7/18X3/4
▼优质解答
答案和解析
①5/6X3/5÷5/8
=5/6×3/5×8/5
=1/2×8/5
=4/5;
②16/3÷4/5-1/3X3/4
=16/3×5/4-1/3×4/3
=20/3-4/9
=56/9;
③5/8X3/25÷8/5
=3/40×5/8
=3/64;
④5/9X2/3-7/18X3/4 求速度
=10/27-7/24
=80/216-63/216
=17/216;
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