简便计算 1.5x5/8+7x5/8=?2.3/4x5/7-3/4x1/7=?3.7/8x3/17x5/7=?4.11/19x2/7x5/11没分给对不起啊、、
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![简便计算 1.5x5/8+7x5/8=?2.3/4x5/7-3/4x1/7=?3.7/8x3/17x5/7=?4.11/19x2/7x5/11没分给对不起啊、、](/uploads/image/z/8561781-45-1.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+1.5x5%2F8%2B7x5%2F8%3D%3F2.3%2F4x5%2F7-3%2F4x1%2F7%3D%3F3.7%2F8x3%2F17x5%2F7%3D%3F4.11%2F19x2%2F7x5%2F11%E6%B2%A1%E5%88%86%E7%BB%99%E5%AF%B9%E4%B8%8D%E8%B5%B7%E5%95%8A%E3%80%81%E3%80%81)
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简便计算 1.5x5/8+7x5/8=?2.3/4x5/7-3/4x1/7=?3.7/8x3/17x5/7=?4.11/19x2/7x5/11没分给对不起啊、、
简便计算 1.5x5/8+7x5/8=?2.3/4x5/7-3/4x1/7=?3.7/8x3/17x5/7=?4.11/19x2/7x5/11
没分给对不起啊、、
简便计算 1.5x5/8+7x5/8=?2.3/4x5/7-3/4x1/7=?3.7/8x3/17x5/7=?4.11/19x2/7x5/11没分给对不起啊、、
1.5x5/8+7x5/8
=5/8x(5+7)
=12x5/8
=15/2
2.3/4x5/7-3/4x1/7
= 3/4x(5/7-1/7)
=3/4x4/7
=3/7
3.7/8x3/17x5/7
=7/8x5/7x3/17
=5/8x3/17
=15/136
4.11/19x2/7x5/11
=11/19x5/11x2/7
=5/19x2/7
=10/133