二元一次方程组计算题100题解析.pdf

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1、 1.2x+9y=81 3x+y=34 2.9x+4y=35 8x+3y=30 3.7x+2y=52 7x+4y=62 4.4x+6y=54 9x+2y=87 5.2x+y=7 2x+5y=19 6.x+2y=21 3x+5y=56 7.5x+7y=52 5x+2y=22 8.5x+5y=65 7x+7y=203 9.8x+4y=56 x+4y=21 10.5x+7y=41 5x+8y=44 11.7x+5y=54 3x+4y=38 12.x+8y=15 4x+y=29 13.3x+6y=24 9x+5y=46 14.9x+2y=62 4x+3y=36 15.9x+4y=46 7x+4y=42

2、 16.9x+7y=135 4x+y=41 17.3x+8y=51 x+6y=27 18.9x+3y=99 4x+7y=95 19.9x+2y=38 3x+6y=18 20.5x+5y=45 7x+9y=69 21.8x+2y=28 7x+8y=62 22.x+6y=14 3x+3y=27 23.7x+4y=67 2x+8y=26 24.5x+4y=52 7x+6y=74 25.7x+y=9 4x+6y=16 26.6x+6y=48 6x+3y=42 27.8x+2y=16 7x+y=11 28.4x+9y=77 8x+6y=94 29.6x+8y=68 7x+6y=66 30.2x+2y=2

3、2 7x+2y=47 31.5x+3y=8 3x+5y=8 32.6x-7y=5 x+2y=4 33.10 x-8y=14 x+y=5 34.4x+7y=3 x+y=0 35.3x+y=10 7x-y=20 36.44x+10y=27 x+y=1 37.8x-y=0 x+y=18 38.11x-y=12 11y-x=-12 39.5x+6y=27 2x+3y=12 40.7x-2y=4 x+2y=12 41.(2x+y)-5y=2 2x-5y=0 42.7x-3y=3 3x+2y=21 43.7x+2y=21 y-6x=1 44.10 x-8y=0 3x-2y=2 45.3x+y=10 5x-

4、7y=8 46.3x-2y=1 x-y=3 47.x+3y=-5 3x-4y=-2 48.y-3x=2 x-2y=6 49.5x+3y=2 2x-y=3 50.9x-3y=12 2x+y=6 51.2x+3y=7 3x+2y=3 52.3x+2y=18 x+y=7 53.2x-5y=1 x+y=3 54.x+8y=442 5x+6y=480 55.3x-2y=5 7x-4y=11 56.3x-5y=2 2x-y=3 57.4x-3y=18 2x-y=8 58.x-2y=5 x+3y=-5 59.3x+y=7 2x+3y=7 60.3x-2y=7 2x-3y=3 61.23x+17y=63 17

5、x+23y=57 62.x-y=2 x+1=2(y-1)63.x-5y=0 3x+2y=17 64.x+2=4 2(y-3)=6 65.3(y-2)=x-1 2(x-1)=5y-8 66.x+2y+2=0 7x-4y=-41 67.x-3y+20=0 3x+7y-100=0 68.2x+y=1 3x-2y=-9 69.3x-4y+11=0 3y-4x+53=0 70.4y=3x+4 5y=4x+3 71.7x-3y+1=0 4x-5y=-17 72.3x-y-3=0 4x+3y=17 73.x-y=3 2y+3(x-y)=11 74.143yx 3x-4y=2 75.3434yx 3(x-4)

6、=4(y+2)76.1312yx 3x+2y=10 77.yx231 2(x+1)-y=11 78.0232yyx 2(2x+y)-5=7y 79.6x+6y=48 6x+3y=42 80.(2x+y)-5y=2 2x-5y=0 81.1213yx 2x+y=2 82.3434yx 3(x-4)=4(y+2)83.2x-3y=-5 3x+2y=12 84.3x-2(x+2y)=3 11x+4(x+2y)=45 85.x-2y=3 10725yx 86.9x+2y=20 3x+4y=10 87.523151yx 0.5x-0.3y=0.2 88.11x-9y=12 -4x+3y=-5 89.3x+5y=6 6x+15y=16 90.3x-y-3=0 4x+3y=17 91.x+y=500 0.7+0.9y=386 92.84.054126.05yxyx 93.14 yx x+4y=4 94.62392yxyx 95.3x+5y=19 8x-3y=67 96.57161xx 2x-1=3y+3 97.x-2y=7 1-3x=21y 98.5.3x+4.7y=112 4.7+5.3y=88 99.3157452yxyx 100.x+y=9 3(x+y)+2x=33