12 +23 +34+ 45 +56+ 67 +78 +89/1.2+ 3.4 +4.5 +5.6+6.7+ 7.8 +8.9

问题描述:

12 +23 +34+ 45 +56+ 67 +78 +89/1.2+ 3.4 +4.5 +5.6+6.7+ 7.8 +8.9
要过程@@@@@@@@@@@@@@@@@@@@@@@@@@@
我少打了一个2.3

12 +23 +34+ 45 +56+ 67 +78 +89/1.2+ 3.4 +4.5 +5.6+6.7+ 7.8 +8.9=12 +23 +34+ 45 +56+ 67 +78 +89/[(1.2+ 3.4 +4.5 +5.6+6.7+ 7.8 +8.9)*10/10]=12 +23 +34+ 45 +56+ 67 +78 +89/[(12 +23 +34+ 45 +56+ 67 +78 +8...