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第1页12+9x872十(27-18)21+25十55x(68-60)54+6x39x(65-62)6+35十5(65-41)十645+20十580-6x97x7+31(16+40)十89x(6+3)35十7+82(15+5)十46x2+778+2x98x(71-67)(50-41)x9(47-40)x4(11+13)十693-54十6(33-29)x7(4+4)x576-15十584-6x67x(60-56)74+54十69x(38-30)4x(80-72)5x5-223x6+3181十(35-26)9x(60-51)54十(5+4)65-27十32x6+87(47+17)十812十2+5296-4x7第2页第3页62+21十79x5-21(84-79)x529-6x484-40十566-24十858-24十3(10+6)十4(7+2)x554-3x537-3x7(92-85)x649十(69-62)(4+5)x733-24十8(99-96)x718十2+6(51+13)十87x8+1854十(20-11)9x(6+2)3x8-2095-9x887+36十6(98-95)x56x4+1480+42十775-8x4(7+2)x45x(50-44)4x(3+3)6x8-1616十8+786-4x6(89-57)十8(6+3)x754十(37-31)(56+8)十8(5+3)x555-24十8第4页第5页(51+30)十974+12十442-24十663十(3+6)6x(4+2)27十9+57(70-67)x815十5+9116-49十7(11+34)十5(55-50)x445十(36-27)35+7x972十(97-89)75-9x66x4-10(80-44)十64x7-2144-18十637-3x95x4+465x(5+2)(4+4)x79x(67-64)(47-23)十689-9x9(18+12)十653-15十3(3+6)x74x(6+2)5x(60-51)5x6-24(35-29)x4(78-48)十525十(51-46)18十2+57(34-25)x435+32十89十3+4042十(78-71)第6页第7页55-72十8(44-36)x8(18+31)十750-56十889+27十36x(61-54)5x7+1113+5x767+56十860-3x27x6-38(17+7)十47x(57-49)(5+2)x99x8-2283+3x311+9x68x3-1192+54十941+8x38x(67-59)81十(61-52)(15+33)十624-15十394-5x741-28十736十(66-57)56+9x228十4+778x4+54(5+2)x7(32-25)x457+42十76x6-2425+16十842+42十69x4+12(76-70)x88x(3+3)(3+4)x4第8页第9页9x(34-30)82+30十645十5+738x7+109x7+1422+4x84x5-1072-45十94x(4+4)6x5-1528十(77-70)(97-88)x779-8x363十(46-39)(42-12)十6(10+14)十45x4-1863十(42-35)56十7-74x3+76(20+15)十742十7+9152+12十441-2x56x(94-88)23+9x39x(5+4)8x(4+5)(71-63)x87x5+2162+12十254十9+5366+42十7(9+40)十7(7+2)x672-72十9(83-77)x83x8+209x3-840十5-7第10页第11页(4+44)十6(6+34)十5(4+4)x472十(97-88)74-8x8(91-19)十8(32-28)x949十7+5093-2x4(4+45)十730十6+91(78-42)十97x2-119x(56-49)9x(90-82)43+7x36x(32-24)(18+24)十68x6-1350+16十276-30十663十(30-23)6x(3+2)9x2+86x2+172x9-7(65-62)x497-32十48x(47-43)47-45十9(5+4)x614+7x7(74-25)十771-7x946+4x8(38-30)x46x(35-29)64-30十62x7-965-4x8第12页第13页75-8x45x9-4298-3x58x(100-96)66+48十894+8十277-54十6(12+12)十6(12+23)十7(3+4)x49x5-7(66-30)十6(7+2)x85x4+746x2+78(93-85)x915十3+5846-81十9(93-30)十9(56-50)x65x(4+5)7x(5+2)30十6+57(85-78)x62x8+3825十5+79(88-81)x4(62-56)x845十9+36(91-10)十98x3+684x7+6181十(69-60)20十(52-47)18-4x3(47+9)十799-30十572十(24-16)60-6x5(4+2)x5第14页30-15十328+8x84x(59-50)64+25十519+9x669-21十781-12十456十(72-64)(41-38)x84x(29-22)15-30十66x(67-64)89-20十557+7x6(62-13)十7(44-39)x484-8x32x2+2359+6x532十(13-5)19+12十426+6x931+5x38十2+817x6-1716-18十6(5+2)x9(32-7)十5(13+7)十414十2+8757+8x479-81十913+4x263十(35-26)32十8+9150+3x297-81十99x(5+4)84-15十3(32+10)十7第15页第16页4x3+32(65-58)x9(19+13)十836十6+26(36+6)十763十9+423x8-1412-48十635十(12-7)81十9+3724十6+508x2+677x4-88x(5+4)(4+3)x649十(12-5)83-4x8(56-14)十719+8x827十9+14(17+13)十652+18十97x(28-23)(15+15)十678-9x292-2x2(3+5)x7(85-4)十982+18十26x(7+2)8x4-3024-35十546-4x2(20+16)十456十7+87+24十48x5+4025十5+42(92-76)十4(7+33)十8第17页6+28十48-36十695-72十842+3x681+42十7(39+17)十79x7+672十(3+6)24十(32-26)38+14十754十9+62(22+50)十925十(10-5)(36-31)x4(16+14)十66x9-27(70-54)十48x(99-94)7x(50-43)52+6十257+6x2(77-45)十4(82-75)x56x(5+4)(21+33)十97x(44-39)35+8x776-6x92x7+43(16+4)十415-4x333+5x9(86-37)十7(98-63)十5(34+8)十634+36十67x(4+2)4十2+9135十(20-13)42十(33-26)第18页7-49十756十(3+4)5x4-1740-45十510十2+3657-27十3(68-64)x810+9x6(80-17)十72x6-...