前题是X+5Y=2问2X+3+10Y=?怎样做步骤是怎样的?
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/06 12:34:50
xRێA U:1 4 a (\6+]i5!$]SRu*C :5^\\ƌ:6.BWsN =GM"j7_"^4 c˴"= "7=0MK2Z+Ι`S3姆0p [SA+,
*. W~X(*U뉁xCZ}!w꒸[ jJ>jW*uYiSye-5>/?ϛ
L[u!7sr< XY6w
J?| >XmXTNo
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知x-y=3,x+y=8,问x^2 -y^2=?
X/Y=2/5 X+60/Y=4/7 问X.Y各是多少
前题是X+5Y=2问2X+3+10Y=?怎样做步骤是怎样的?
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
先化简再求值(x-y)(x-2y)+(x-2y)(x-3y)-2(x-3y)(x-4y) x=4 y=5
设：每箱x千克,一共y千克 10x=3/5 y 3x+10=2/5 y 解得：x=30,y=500问：怎么求出的X和Y?
问一条数学题：已知实数x、y满足√(2x-3y-1) + |x-2y+2|=0,求2x- 4/5y的值
2(x+3y)+(x+y+z)=5.8和3(x+3y)+(x+y+z)=6.3组成方程组,问x+y+z=多少?
{(x+y)/2+(x-y)/3=1,(x+y)-5(x-y)=2.求x=?,y=?
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