ï¼4ï¼åå¼=-1-1.5Ã1/3Ã[1/4-1/8]
=-1-0.5Ã1/8
=-1-1/16
=-1å1/16
ï¼5ï¼åå¼=-8÷8/5Ã16/9÷25/9
=-5Ã16/9Ã9/25
=-80/9Ã9/25
=-3.2
ï¼6ï¼åå¼=-3/2Ã[1-3Ã4/9]-1/16Ãï¼-8ï¼Ã·ï¼-27/64ï¼
=-3/2Ã[1-4/3]+1/2Ãï¼-64/27ï¼
=-3/2Ãï¼-1/3ï¼-32/27
=1/2-32/27
=-37/54
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