会做的帮忙把过程和答案写出来, 要正确的, 我会给高分
原题= -[1/2-1/3-﹙1/6+2.2﹚]
=-[1/2-1/3-﹙1/6+11/2﹚]
=-[3/6-2/6-﹙1/6+33/6﹚]
=-[1/6-34/6]
=-[-33/6]
=33/6
=5 ½
=-[1/2-1/3-﹙1/6+11/2﹚]
=-[3/6-2/6-﹙1/6+33/6﹚]
=-[1/6-34/6]
=-[-33/6]
=33/6
=5 ½
温馨提示:答案为网友推荐,仅供参考
第1个回答 2011-12-01
解:=-[1/2-1/3-(1/6+5/2-3/10)]
=-(1/6-1/6-5/2+3/10)
=5/2-3/10
=25/10-3/10
=22/10
=2.2
=-(1/6-1/6-5/2+3/10)
=5/2-3/10
=25/10-3/10
=22/10
=2.2
第2个回答 2011-12-01
解:原式=—[0.5-(1/3+1/6)-2.5+0.3]
=—[0.5-0.5-2.5+0.3]
=2.2
=—[0.5-0.5-2.5+0.3]
=2.2