求解！要过程！多谢！ 5
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27/5-[(-10/5+17/5)-(46/15-18x3/5x3)]
=27/5-[(7/5)-(46/15-54/15)]
=27/5-[(7/5)-(-8/15)]
=27/5-[7/5+8/15]
=27/5-[7x3/5x3+8/15]
=27/5-[21/15+8/15]
=27/5-[+29/15]
=27/5-29/15
=[27x3/5x3]-29/15
=81/15-29/15
=52/15
=3 7/15
=27/5-[(7/5)-(46/15-54/15)]
=27/5-[(7/5)-(-8/15)]
=27/5-[7/5+8/15]
=27/5-[7x3/5x3+8/15]
=27/5-[21/15+8/15]
=27/5-[+29/15]
=27/5-29/15
=[27x3/5x3]-29/15
=81/15-29/15
=52/15
=3 7/15
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