1) (-9)-(-13)+(-20)+(-2)
(2) 3+13-(-7)/6
(3) (-2)-8-14-13
(4) (-7)×(-1)/7+8
(5) (-11)×4-(-18)/18
(6) 4+(-11)-1/(-3)
(7) (-17)-6-16/(-18)
(8) 5/7+(-1)-(-8)
(9) (-1)×(-1)+15+1
(10) 3-(-5)×3/(-15)
(11) 6×(-14)-(-14)+(-13)
(12) (-15)×(-13)-(-17)-(-4)
(13) (-20)/13/(-7)+11
(14) 8+(-1)/7+(-4)
(15) (-13)-(-9)×16×(-12)
(16) (-1)+4×19+(-2)
(17) (-17)×(-9)-20+(-6)
(18) (-5)/12-(-16)×(-15)
(19) (-3)-13×(-5)×13
(20) 5+(-7)+17-10
(21) (-10)-(-16)-13×(-16)
(22) (-14)+4-19-12
(23) 5×13/14/(-10)
(24) 3×1×17/(-10)
(25) 6+(-12)+15-(-15)
(26) 15/9/13+(-7)
(27) 2/(-10)×1-(-8)
(28) 11/(-19)+(-14)-5
(29) 19-16+18/(-11)
(30) (-1)/19+(-5)+1
(31) (-5)+19/10×(-5)
(32) 11/(-17)×(-13)×12
(33) (-8)+(-10)/8×17
(34) 7-(-12)/(-1)+(-12)
(35) 12+12-19+20
(36) (-13)×(-11)×20+(-4)
(37) 17/(-2)-2×(-19)
(38) 1-12×(-16)+(-9)
(39) 13×(-14)-15/20
(40) (-15)×(-13)-6/(-9)
(41) 15×(-1)/12+7
(42) (-13)+(-16)+(-14)-(-6)
(43) 14×12×(-20)×(-13)
(44) 17-9-20+(-10)
(45) 12/(-14)+(-14)+(-2)
(46) (-15)-12/(-17)-(-3)
(47) 6-3/9/(-8)
(48) (-20)×(-15)×10×(-4)
(49) 7/(-2)×(-3)/(-14)
(50) 13/2×18×(-7)
(51) 13×5+6+3
(52) (-15)/5/3+(-20)
(53) 19×4+17-4
(54) (-11)-(-6)×(-4)×(-9)
(55) (-16)+16-(-8)×(-13)
(56) 16/(-1)/(-10)/(-20)
(57) (-1)-(-9)-9/(-19)
(58) 13×20×(-13)×4
(59) 11×(-6)-3+18
(60) (-20)+(-12)+(-1)+(-12)
(61) (-19)-3×(-13)×4
(62) (-13)/3-5×8
(63) (-15)/1+17×(-18)
(64) (-13)/3/19/8
(65) (-3)/(-13)/20×5
(66) 3/12/(-18)-18
(67) 5×(-19)/13+(-6)
(68) 4+4×(-19)-11
(69) (-2)+17-5+(-1)
(70) 9+(-3)×19×(-19)
(71) (-12)-(-6)+17/2
(72) 15×(-5)-(-3)/5
(73) (-10)×2/(-1)/4
(74) (-8)×16/(-6)+4
(75) 2-11+12+10
(76) (-3)+(-20)×(-7)×(-9)
(77) (-15)+8-17/7
(78) (-14)×10+18×2
(79) (-7)+2-(-17)×19
(80) (-7)/18/1+1
(81) 11/(-9)-(-16)/17
(82) 15+5×6-(-8)
(83) (-13)×(-18)+18/(-6)
(84) 11-(-1)/11×(-6)
(85) (-4)+(-12)+19/6
(86) (-18)/(-1)/(-19)+2
(87) 9×(-8)×(-6)/11
(88) 20×(-3)×(-5)+1
(89) (-18)-2+(-11)/20
(90) 15×1+4×17
(91) 1-10+(-14)/(-1)
(92) 10+(-4)×(-19)+(-12)
(93) 15/14/5×7
(94) 8+(-13)/3+1
(95) (-14)+6+(-2)×(-14)
(96) (-5)/(-13)/4+7
(97) (-15)/(-2)/(-12)+(-2)
(98) (-17)-(-20)-20×(-10)
(99) (-7)-10-13/3
(100) (-20)+(-18)+11+9
题
1 -18
2 103/6 错1)87x+2y=7733
20x+32y=4364
：x=87 y=82
2)44x+60y=6340
15x+42y=4122
：x=20 y=91
3)11x+74y=3548
71x+45y=4730
：x=40 y=42
4)53x+54y=3229
70x+43y=2877
：x=11 y=49
5)43x+9y=801
76x+16y=1420
：x=9 y=46
6)55x+32y=6161
45x+84y=10707
：x=55 y=98
7)47x+27y=5396
94x+55y=10870
：x=70 y=78
8)33x+49y=4237
92x+2y=6428：有无
9)0x+56y=3920
64x+90y=9244
：x=46 y=70
10)91x+8y=4696
51x+66y=5154
：x=48 y=41
11)76x+90y=12152
52x+0y=4004
：x=77 y=70
12)47x+55y=6777
19x+48y=4131
：x=81 y=54
13)99x+57y=6558
85x+46y=5563
：x=53 y=23
14)26x+73y=7814
69x+65y=8379
：x=31 y=96
15)78x+35y=6814
10x+52y=2394
：x=73 y=32
16)21x+34y=3444
30x+35y=4350
：x=96 y=42
17)76x+64y=6048
54x+78y=6444
：x=24 y=66
18)25x+78y=9164
72x+61y=11992
：x=92 y=88
19)57x+62y=7419
18x+71y=7125
：x=29 y=93
20)53x+16y=1665
0x+2y=122
：x=13 y=61
21)26x+88y=5346
18x+76y=4274
：x=77 y=38
22)45x+61y=3848
88x+91y=6450
：x=34 y=38
23)98x+42y=11088
4x+32y=2512
：x=84 y=68
24)18x+86y=9558
60x+43y=7737
：x=58 y=99
25)11x+96y=5708
66x+13y=1031
：x=4 y=59
26)53x+12y=3567
94x+69y=7233
：x=63 y=19
27)70x+16y=3508
63x+16y=3186
：x=46 y=18
28)0x+10y=940
66x+20y=4850
：x=45 y=94
29)39x+66y=7791
55x+22y=5159
x=61 y=82
30)11x+74y=4537
12x+1y=405
：x=29 y=57
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