9x+4y=35 8x+3y=30
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 06:23:24
xRN@9" 襽a"jX4MOB'no"zigyfwKo|K pJG_\\aW) a(lЍ¢Fmϗ6tK~':?}(b fmf_o^K튞;N&w|+^bQaiQQEod,6)M44l\>*
9l(40G*66p"%ܔ7
Qֺ+dGHDRpV\'p^cqMgk$&rgz&ADC#^<
D;Z )eeyؖ7qJ>_
:oDD
9x+4y=35 8x+3y=30
9x+4y=35 8x+3y=30
9x+4y=35 8x+3y=30
9x+4y=35 (1)
8x+3y=30 (2)
(1)×3-(2)×4得:
-5x=-15
x=3
代入(1)解得:y=2
所以,方程组的解是:
x=3
y=2
相减 x+y=5,x=3,y=2
9x+4y=35 ①
8x+3y=30②
3①-4②得x=11
代入①得y=-16
9x+4y=35 (1)
8x+3y=30 (2)
(1)-(2)得x+y=5 (3)
(3)*3得 3x+3y=15 (4)
(2)-(4)得x=3 ,y=2
9X +4 Y = 35(1)
8X +3 Y = 30(2)
(!)×3,获得27X +12 Y = 105(3)
(2)×4有/> 32倍12为y = 120(4)
(4) - (3),是
5倍的= 15
= 3 BR /> X = 3到8倍+3 Y = 30,
24 +3 Y = 30
1612 = 6
Y = 2
所以x = 3时, = 2
、1.2x+9y=81 3x+y=341.2x+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
9y=3x-(x-1),4(x+y)-(2x+4)=8y
二元一次方程组计算题的步骤答案2x+9y=81 3x+y=34 9x+4y=35 8x+3y=30 7x+2y=52 7x+4y=62 4x+6y=54 9x+2y=87 2x+y=7 2x+5y=19 x+2y=21 3x+5y=56 5x+7y=52 5x+2y=22 5x+5y=65 7x+7y=203 8x+4y=56 x+4y=21 5x+7y=41 5x+8y=44 7x+5y=54 3x+4y=38 x+8y=15 4x+
3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
二元一次方程组试题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+
9X+4Y=35 8X+3Y=30二元一次方程怎么解
二元一次方程.9x+4y=35 8x+3y=30
9x+4y=35 8x+3y=30 二元一次方程,
二元一次方程,9x+4y=35 8x+3y=30
9x+4y=35 8x+3y=30
9x+4y=35 8x+3y=30
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y 联立方程 有的话
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y
3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y怎么解