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【专家解说】：(45-17)+(9-3)=28+6=34.(45-17)+(9-6)=28+3=31.(45-18)+(9-3)=27+6=33 (45-18)+(9-6)=27+3=30.(45-27)+(9-3)=18+6=24.(45-27)+(9-6)=18+3=21 (45-28)+(9-3)=17+6=23.(45-28)+(9-6)=17+3=20.(46-17)+(8-3)=29+5=34 (46-17)+(8-5)=29+3=32.(46-19)+(8-3)=27+5=32.(46-19)+(8-5)=27+3=30 (46-27)+(8-3)=19+5=24.(46-27)+(8-5)=19+3=22.(46-29)+(8-3)=17+5=22 (46-29)+(8-5)=17+3=20.(54-16)+(9-2)=38+7=45.(54-16)+(9-7)=38+2=40 (54-18)+(9-2)=36+7=43.(54-18)+(9-7)=36+2=38.(54-36)+(9-2)=18+7=25 (54-36)+(9-7)=18+2=20.(54-38)+(9-2)=16+7=23.(54-38)+(9-7)=16+2=18 (57-18)+(6-2)=39+4=43.(57-18)+(6-4)=39+2=41.(57-19)+(6-2)=38+4=42 (57-19)+(6-4)=38+2=40.(57-38)+(6-2)=19+4=23.(57-38)+(6-4)=19+2=21 (57-39)+(6-2)=18+4=22.(57-39)+(6-4)=18+2=20.(63-15)+(9-2)=48+7=55 (63-15)+(9-7)=48+2=50.(63-18)+(9-2)=45+7=52.(63-18)+(9-7)=45+2=47 (63-45)+(9-2)=18+7=25.(63-45)+(9-7)=18+2=20.(63-48)+(9-2)=15+7=22 (63-48)+(9-7)=15+2=17.(64-25)+(8-1)=39+7=46.(64-25)+(8-7)=39+1=40 (64-29)+(8-1)=35+7=42.(64-29)+(8-7)=35+1=36.(64-35)+(8-1)=29+7=36 (64-35)+(8-7)=29+1=30.(64-39)+(8-1)=25+7=32.(64-39)+(8-7)=25+1=26 (67-18)+(5-2)=49+3=52.(67-18)+(5-3)=49+2=51.(67-19)+(5-2)=48+3=51 (67-19)+(5-3)=48+2=50.(67-28)+(5-1)=39+4=43.(67-28)+(5-4)=39+1=40 (67-29)+(5-1)=38+4=42.(67-29)+(5-4)=38+1=39.(67-38)+(5-1)=29+4=33 (67-38)+(5-4)=29+1=30.(67-39)+(5-1)=28+4=32.(67-39)+(5-4)=28+1=29 (67-48)+(5-2)=19+3=22.(67-48)+(5-3)=19+2=21.(67-49)+(5-2)=18+3=21 (67-49)+(5-3)=18+2=20.(72-14)+(9-3)=58+6=64.(72-14)+(9-6)=58+3=61 (72-18)+(9-3)=54+6=60.(72-18)+(9-6)=54+3=57.(72-54)+(9-3)=18+6=24 (72-54)+(9-6)=18+3=21.(72-58)+(9-3)=14+6=20.(72-58)+(9-6)=14+3=17 (73-14)+(8-2)=59+6=65.(73-14)+(8-6)=59+2=61.(73-19)+(8-2)=54+6=60 (73-19)+(8-6)=54+2=56.(73-54)+(8-2)=19+6=25.(73-54)+(8-6)=19+2=21 (73-59)+(8-2)=14+6=20.(73-59)+(8-6)=14+2=16.(81-24)+(9-3)=57+6=63 (81-24)+(9-6)=57+3=60.(81-27)+(9-3)=54+6=60.(81-27)+(9-6)=54+3=57 (81-35)+(9-2)=46+7=53.(81-35)+(9-7)=46+2=48.(81-36)+(9-2)=45+7=52 (81-36)+(9-7)=45+2=47.(81-45)+(9-2)=36+7=43.(81-45)+(9-7)=36+2=38 (81-46)+(9-2)=35+7=42.(81-46)+(9-7)=35+2=37.(81-54)+(9-3)=27+6=33 (81-54)+(9-6)=27+3=30.(81-57)+(9-3)=24+6=30.(81-57)+(9-6)=24+3=27 (83-14)+(7-2)=69+5=74.(83-14)+(7-5)=69+2=71.(83-19)+(7-2)=64+5=69 (83-19)+(7-5)=64+2=66.(83-24)+(7-1)=59+6=65.(83-24)+(7-6)=59+1=60 (83-29)+(7-1)=54+6=60.(83-29)+(7-6)=54+1=55.(83-54)+(7-1)=29+6=35 (83-54)+(7-6)=29+1=30.(83-59)+(7-1)=24+6=30.(83-59)+(7-6)=24+1=25 (83-64)+(7-2)=19+5=24.(83-64)+(7-5)=19+2=21.(83-69)+(7-2)=14+5=19 (83-69)+(7-5)=14+2=16.(86-27)+(4-1)=59+3=62.(86-27)+(4-3)=59+1=60 (86-29)+(4-1)=57+3=60.(86-29)+(4-3)=57+1=58.(86-57)+(4-1)=29+3=32 (86-57)+(4-3)=29+1=30.(86-59)+(4-1)=27+3=30.(86-59)+(4-3)=27+1=28 (91-24)+(8-3)=67+5=72.(91-24)+(8-5)=67+3=70.(91-27)+(8-3)=64+5=69 (91-27)+(8-5)=64+3=67.(91-34)+(8-2)=57+6=63.(91-34)+(8-6)=57+2=59 (91-37)+(8-2)=54+6=60.(91-37)+(8-6)=54+2=56.(91-54)+(8-2)=37+6=43 (91-54)+(8-6)=37+2=39.(91-57)+(8-2)=34+6=40.(91-57)+(8-6)=34+2=36 (91-64)+(8-3)=27+5=32.(91-64)+(8-5)=27+3=30.(91-67)+(8-3)=24+5=29 (91-67)+(8-5)=24+3=27.(92-34)+(7-1)=58+6=64.(92-34)+(7-6)=58+1=59 (92-38)+(7-1)=54+6=60.(92-38)+(7-6)=54+1=55.(92-54)+(7-1)=38+6=44 (92-54)+(7-6)=38+1=39.(92-58)+(7-1)=34+6=40.(92-58)+(7-6)=34+1=35 (93-15)+(6-2)=78+4=82.(93-15)+(6-4)=78+2=80.(93-18)+(6-2)=75+4=79 (93-18)+(6-4)=75+2=77.(93-75)+(6-2)=18+4=22.(93-75)+(6-4)=18+2=20 (93-78)+(6-2)=15+4=19.(93-78)+(6-4)=15+2=17.(94-16)+(5-2)=78+3=81 (94-16)+(5-3)=78+2=80.(94-18)+(5-2)=76+3=79.(94-18)+(5-3)=76+2=78 (94-76)+(5-2)=18+3=21.(94-76)+(5-3)=18+2=20.(94-78)+(5-2)=16+3=19 (94-78)+(5-3)=16+2=18.(95-27)+(4-1)=68+3=71.(95-27)+(4-3)=68+1=69 (95-28)+(4-1)=67+3=70.(95-28)+(4-3)=67+1=68.(95-67)+(4-1)=28+3=31 (95-67)+(4-3)=28+1=29.(95-68)+(4-1)=27+3=30.(95-68)+(4-3)=27+1=28