123+123+12-147+0-0-85+45-42+12-23=

123+123-147=? （5-5)/45=0 (55-10)/45=0 (555-15)/45=12 (5555-20)/45=123 (555 12*123=( ) 123+12=? 12+123+123 1+12+123+1234=? 12+12-12-12-12-12+99-21-12-12+789-123-123+789= 12+5+123-45等于几 123+123+123+123+123+123+123+123+123+123-123-123-123-123-123= 12=13=14=15 21=22=23=24=25 121=122=123=123=125 212=? 123+123+123= 12+123+1234+12345+123456+1234567=