7x+10y=400,5x+16y=330这组方程组的解是
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 05:58:16
xN0_G+te6Et7!*FЋd#%3pM~uwi]z%cǶ{yԈ/lW 3*.By&)XiWS#']qS4-߳cԲMi!Jqƭh^vbDxtߞ||?yV3@~٭շvjZBY-I(Vv2gzs`Z
8P V$%Z&]y$aȗ[90̈́Ͳ ?m̬X<
U]Uw0pG3~7㹳+6CB,A90U> K6P!ɗ+&dp!BuȟZ
方程组 共四题 3x-4y=10 x+2y+2=0 5x+6y=42 7x-4y=-41 3x+4y=16 3x+5y=5 5x-6y=33 3x-4y=23(1)3x-4y=10 (2) x+2y+2=05x+6y=42 7x-4y=-41(3)3x+4y=16 3x+5y=55x-6y=33 (4) 3x-4y=23
x+y=16 5x-6y=33
(x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
{6(x-y)-7(x+y)=21 {2(x-y)-5(x+y)=-1
(7x-10y)-(-10y-5x)=?
x-y/7 - x+y/10 =1/2 2(x-y)-5(x+y)=3修改、、、、(x-y)/7-(x+y)/10=1/2 2(x-y)-5(x+y)=3
x+y=5① x=3y+2① 9x-5y=1① 3x-2y=11① x-2y=y+1① 2x-y=7② x+3y=8② 6x-7y=2② 2x+3y=16② 2x-3y=10②3x+2y=y+1①2x-3y=10②D
1.5(x+y)+3(x-y)=27(x+y)-3(x-y)=-62.x-y/7 - x+y/10 =1/22(x-y)-5(x+y)=3所谓细节决定成败,
5X+16X= Y+9Y= X+7X-4X=
解方程组x+y/5+x-y/7=2 3(x+y)+x-y/7=16
初二上学期方程题 4x+y=5 5x+4y=63x-2y=1 2x+3y=13x-2y=7 7x+5y=32x+3y=17 2x-y=-4x+5y=6 2x+y=23x-6y=4 3x+2y=52x+y=73x-4y=53x+y=1x-2y=-1x+y=42x+3y=92x-3y=74x+5y=3x+y=20004x+6y=90003x+5y=113x-2y=42x+3y=215x-2y=5x+y=54x+3y=182x+3y=16x+4y=132x+3y=40x
{ x-y/7-x+y/10=1/2 {2(x-y)+5(x+y)=3
{ x-y/7-x+y/10=1/2 {2(x-y)+5(x+y)=3
方程组 x+5y+2=06x-7y=16x=y=
X+Y=7(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)
若5x+y/7x+10y=1/2,则x/y=?
若7x+10y分之5x+y=1/2,则x/y=