解二元一次方程組計(jì)算題

解二元一次方程組計(jì)算題1.3x+y=343.2x+9y=813.4.9x+4y=358x+3y=30 5.，+3尸12. ①戶-3尸6,②6』一廠4 ①⑵+廠3二Q ②7.7x+2y=527x+4y=62 .8.(支+￡尸1 ①13K-2y=11—②9‘上?產(chǎn)2'?'①13算+5y=14…②10..4x+6y=549x+2y=87 11.p=y+l12.J2i4-y=8[k-y=lAQG、，"7?.2匕x^y-，1x+5y=19 14」z-尸*口工十廠12量+產(chǎn)與①2x-y=l②163心+2y=21x+5y=56 17..x+3y=-]①-2廣E敵4y=4%-y=l19.《15x+7y=52f5x+2y=22 20.4k-3尸12x+y=13LI21.Jx^3y=8(5冥-3y=4227，5x+5y=65k+7y=203 23.1^x+2y=l,2H-y=LJ24/2x+y=4卜十2y=5.251,8x+4y=56x+4y=21 26.pz-y=3⑴%產(chǎn)7⑵ 27.\+2y=l河-祐1128.5x+7y=4155x+8y=44 293y-2】c=1730.二6.金+5y=8①Zx-y=l②31.x+5y=543X+4y=3832.33.s=3y-53尸B-2y55.J8x+2y=16 9x-3y=1,7x+y=11 68.2x+y=6]55.J8x+2y=16 9x-3y=1,7x+y=11 68.2x+y=6]55.J8x+2y=16 9x-3y=1,7x+y=11 68.2x+y=6]55.J8x+2y=16 9x-3y=1,7x+y=11 68.2x+y=6]46.9x+7y=135x+6y=273x+8y=51,彳47.4x+y=41L4x+7y=959x+3y=9949.9x+2y=383x+6y=182x+3y=7廣50. ，3x+y=7 ,3x-2y=751.2x-3y=346.9x+7y=135x+6y=273x+8y=51,彳47.4x+y=41L4x+7y=959x+3y=9949.9x+2y=383x+6y=182x+3y=7廣50. ，3x+y=7 ,3x-2y=751.2x-3y=352.fx+5y=45'3x+3y=2755.7x+4y=67]x+2y=458.5x+4y=527x+6y=7461.7x+y=94x+6y=1653. 8x+2y=2847x+9y=695x+3y=8j56.3x+5y=84x-3y=1859.2x-y=8I3x-2y=564.6x+6y=48

6x+3y=427x-4y=11x+6y=1454.7x+8y=6257.6x-7y=52x+8y=2660.x-2y=5x+3y=-53x-5y=22x-y=3y-3x=265.x-2y=666.10x-8y=14x+y=534.4Ly=29 35 .卜一尸3[zy+3(x-y)二1136-|+l=y⑴2(xH)-y=6(2)37.：4!x+6y=249x+5y=46 38 .k+y=939.，行產(chǎn)3 ①5K-3(x+y)二1 ②40.9卜+2y=624]13y=36 41.南機(jī). 42［取+2尸10丁方2(k+1)-y=ll15.9x+4y=467Ly=42 44.普-加02(2x4y)-5=7y45.2(冗-⑴ __s^y__13 4-123(x+y)-2(2x-y)=33x-5y=22x-y=348.j5x+3y=248.j5x+3y=22x-y=34x+9y=7718x+6y=94fx+7y=3x+y=03x+y=107x-y=2044x+10y=27[x+y=18x-y=0x+y=18J1x-y=12111y-x=-125x+6y=27'2x+3y=12卜7x-2y=4*+2y=12(2x+y)-5y=2l2x-5y=01x-3y=3[3x+2y=21yx+2y=21[y-6x=1110x-8y=03x-2y=2爭(zhēng)+y=10'5x-7y=83x-2y=1lx-y=347.fx+3y=-