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1、同分母加减法同分母：1/8+3/8=1/25/18+7/18=2/32/9+4/9=2/34/5-2/5=2/53/5-3/5=03/5-2/5=1/55/7+3/7=8/77/10-3/10=2/55/9+2/9=7/95/7-2/7=3/72/5+4/5=6/51/8+1/8=1/42/3+1/3=119/21-5/21=2/35/9+7/9=4/37/2+1/2=44/5+3/5=7/57/11-4/11=3/117/12+5/12=19/10+7/10=8/57/10-3/10=2/511/20-5/20=3/105/12-1/12=1/33/12-1/12=1/6矚慫润厲钐瘗睞枥庑赖
2、。9/10+1/10=15/6-1/6=2/33/7-1/7=2/71/3+1/3=2/33/5-2/5=1/53/4+3/4=3/23/4-1/4=1/24/5+1/5=116/24-10/24=1/46/7+1/7=14/9-3/9=1/913/4+1/4=7/25/8+1/8=3/48/9+7/9=5/38/9-2/9=2/33/10+1/10=2/58/11+5/11=13/111/3+2/3=111/19+8/19=14/15+1/15=1/35/9-5/9=05/4+7/4=32/3-2/3=05/7-4/7=1/73/5-2/5=1/57/8-5/8=1/27/12-1/12=1
3、/217/8-7/8=5/41/6+1/6=1/38/3-2/3=25/11+5/11=10/115/8+2/8=7/86/7-3/7=4/75/7+5/7=10/711/29+6/29=17/299/11-2/11=7/11聞創沟燴鐺險爱氇谴净。17/19-6/19=11/195/6+1/6=16/10+6/10=6/53/5+3/5=6/51/20+2/20=3/203/4+3/4=3/21/6+5/6=15/9-2/9=1/35/6-2/6=1/25/7-5/7=011/14+9/14=10/77/12+3/12=5/65/8+7/8=13/83/5-1/5=2/57/7-3/7=4/7
4、8/9-4/9=4/97/8-2/8=5/89/9-4/9=5/92/9+4/9=2/35/6+7/6=29/12+2/12=11/127/10-3/10=2/57/11+4/11=112/15-10/15=5/63/5+3/5=6/511/15-4/15=7/153/15+5/15=8/155/8+5/8=5/47/12-1/12=1/216/20+25/20=41/201/7+2/7+3/7=6/715/15-5/15-9/15=1/151/8+3/8+5/8+7/8=26/12+3/12+4/12=13/123/12+4/12+5/12=17/8+2/8-4/8=5/83/5+3/5+1
5、/5=7/55/10+3/10-2/10=3/51/11+5/11-6/11=08/8-2/8-3/8=3/8异分母：3/4+1/5=4/53/4-1/5=11/205/6+2/9=19/185/6-2/9=11/182/3+3/5=19/15残骛楼諍锩瀨濟溆塹籟。2/3-3/5=1/156/7+1/2=19/146/7-1/2=5/142/3+1/6=5/61/3+1/4=7/12酽锕极額閉镇桧猪訣锥。1/3-1/4=1/121/5+1/7=12/351/5-1/7=2/351/4+1/9=13/361/4-1/9=5/36彈贸摄尔霁毙攬砖卤庑。1/8+1/9=17/721/8-1/9=1/
6、721/10+7/9=79/905/7-1/6=23/421-5/9=4/9謀荞抟箧飆鐸怼类蒋薔。1/5+3/8=23/403/4+1/5=19/202/3-3/5=1/51-2/5=3/55/8-1/9=37/721/10-1/20=1/201/6+3/8=13/245/9-1/2=1/182/3+1/4=11/121/2+1/3=5/6厦礴恳蹒骈時盡继價骚。5/6+1/18=8/93/5-1/3=4/1517/15-1/3=4/511/12-2/3=1/41/2-1/4=1/4茕桢广鳓鯡选块网羈泪。1/7-1/8=1/561/3-1/9=2/95/6-1/2=1/31-2/3=1/35/8
7、-1/6=11/24鹅娅尽損鹌惨歷茏鴛賴。1/3+1/6=1/23/4-1/2=1/41/5+1/8=13/405/6+4/9=23/185/9-2/5=7/45籟丛妈羥为贍偾蛏练淨。3/7+5/2=41/145/8+9/10=61/4011/12-8/15=23/601/4+1/6=5/121/4-1/6=1/12預頌圣鉉儐歲龈讶骅籴。1-6/7=1/711/12-2/3=1/43/10+2/5=7/107/8-1/4=5/83/4+5/12=7/6渗釤呛俨匀谔鱉调硯錦。3/5-3/7=6/355/4-5/12=5/61/5-1/9=4/451/3-1/8=5/2411/6-2/9=29/1
8、8铙誅卧泻噦圣骋贶頂廡。1/5+1/9=14/451-2/5=3/57/4+1/7=53/281-1/9=8/92/3-2/7=8/21擁締凤袜备訊顎轮烂蔷。5/6+1/2=4/34/3-3/4=7/121-4/7=3/74/3+3/2=17/65/9+18/5=5/6贓熱俣阃歲匱阊邺镓騷。3/8+7/10+5/8=17/107/8- (1/8+3/4)=04/7+1/6-4/7=1/6坛摶乡囂忏蒌鍥铃氈淚。2-7/9-2/9=13/5+7/8+2/5=15/87/9- (1/9+1/3)=1/3蜡變黲癟報伥铉锚鈰赘。1/4+ (2/5+3/4)=7/55/6-3/10+1/6-7/10=03
9、/4+1/6-2/3=1/4買鲷鴯譖昙膚遙闫撷凄。7/8-1/4+4/9=77/721-1/3+2/7=20/211/2+4/5-3/10=15/6- (2/3-1/9)=5/189/10- (3/4+1/8)=1/401/2+2/3-3/4=5/12綾镝鯛駕櫬鹕踪韦辚糴。7/8-1/6+1/4=23/241- (3/4-2/9)=17/369/10-1/5-1/2=1/5驅踬髏彦浃绥譎饴憂锦。1/4+3/7+1/2=33/287/8- (2/3+1/6)=1/241- (1/3+3/5)=1/15猫虿驢绘燈鮒诛髅貺庑。1/2+1/4+1/3=13/127/8+1/4+1/2=5/85/7-
10、(4/7+1/9)=2/63锹籁饗迳琐筆襖鸥娅薔。1-1/4-1/2=1/43/4-1/6-1/3=1/43/10+1/4+2/5=19/202/3+1/6+1/12=11/121-1/4-2/5=7/201/2+1/9+1/12=25/36方程：(1)66x+17y=396725x+y=1200答案：x=48y=47(2)18x+23y=230374x-y=1998答案：x=27y=79(3)44x+90y=779644x+y=3476答案：x=79y=48(4)76x-66y=408230x-y=2940答案：x=98y=51(5)67x+54y=854671x-y=5680答案：x=80
11、y=59(6)42x-95y=-141021x-y=1575答案：x=75y=48(7)47x-40y=85334x-y=2006答案：x=59y=48(8)19x-32y=-178675x+y=4950答案：x=66y=95(9)97x+24y=720258x-y=2900答案：x=50y=98(10)42x+85y=636263x-y=1638答案：x=26y=62(11)85x-92y=-251827x-y=486答案：x=18y=44(12)79x+40y=241956x-y=1176答案：x=21y=19(13)80x-87y=215622x-y=880答案：x=40y=12(14)
12、32x+62y=513457x+y=2850答案：x=50y=57(15)83x-49y=8259x+y=2183答案：x=37y=61(16)91x+70y=584595x-y=4275答案：x=45y=25(17)29x+44y=528188x-y=3608答案：x=41y=93(18)25x-95y=-435540x-y=2000答案：x=50y=59(19)54x+68y=328478x+y=1404答案：x=18y=34(20)70x+13y=352052x+y=2132答案：x=41y=50(21)48x-54y=-318624x+y=1080答案：x=45y=99(22)36x+77y=761947x-y=799答案：x=17y=91 (23)13x-42y=-271731x-y=1333答案：x=43y=78 (24)28x+28y=333252x-y=4628答案：x=89y=30 (25)62x-98y=-256446x-y=2024答案：x=44y=54 (26)79x-76y=-438826x-y=832答案：x=32y=91 (27)63x-40y=-82142x-y=546答案：x=13y=41
