1ãååä¹ä¸Ã·3÷å
åä¹äº
=1/4Ã1/3Ã6/5
=1/10
2ãå
åä¹äºÃ·ä¸åä¹äºÃ·å
«åä¹äº
=5/6Ã3/2Ã8/5
=2
3ãååä¹ä¸Ãåäºåä¹å
«Ã·ååä¹ä¸
=3/4Ã8/15Ã10/7
=4/7
4ãå
«åä¹äºÃ·ååä¹ä¸Ãäºåä¹äº
=5/8Ã4Ã2/5
=1
5.ï¹-98ï¹Ãï¹0.125ï¹ï¼ï¹ï¼98ï¹Ã1/8ï¼98Ãï¹ï¼4/7ï¼
=98Ãï¼-1/8-1/8+4/7ï¼
=98Ãï¼-1/4+4/7ï¼
=98Ã9/28
=31.5
6.-14Ã3/4-0.34Ã3/7+1/4Ã(-14)+4/7Ã-0.34
=-14Ãï¼-3/4-1/4ï¼-0.34Ãï¼3/7+4/7ï¼
=-14-0.34
=-14.34
温馨提示:答案为网友推荐,仅供参考