第1个回答 2011-02-16
5+(7*8+12)/4-2=20
((5+7)*8+12)/4-2=25
5+7*(8+12)/(4-2)=75
(5+7)*8+12/(4-2)=102
(5+7)*(8+12)/(4-2)=120本回答被提问者采纳
第2个回答 2011-02-19
5+(7*8+12)/4-2=20
[(5+7)*8+12]/4-2=25
5+7*(8+12)/(4-2)=75
(5+7)*8+12/(4-2)=102
(5+7)*(8+12)/(4-2)=120
第3个回答 2011-02-16
5+(7*8+12)/4-2=20 ((5+7)*8+12)/4-2=25 5+7*(8+12)/(4-2)=75 (5+7)*8+12/(4-2)=102
(5+7)*(8+12)/(4-2)=120
第4个回答 2011-02-19
5+(7*8+12)/4-2=20
((5+7)*8+12)/4-2=25
5+7*(8+12)/(4-2)=75
(5+7)*8+12/(4-2)=102
(5+7)*(8+12)/(4-2)=120