10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 ...10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 这几提怎么写要过程

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10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 ...10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 这几提怎么写要过程
10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 ...
10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 这几提怎么写要过程

10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 ...10Y+5=11Y-5+2Y 0.4x-1.2_2x=1.2-2.6x 2y-5=11-6y 2x-1=5x+7 这几提怎么写要过程
1.10Y+5=11Y-5+2Y
11Y-10Y+2Y=-5-5
3Y=-10
Y=-3/10
2.0.4X-2X+2.6X=1.2+1.2
X=2.4
3.2Y+6Y=11+5
8Y=16
Y=2
4.5X-2X=-1-7
3X=-8
X=-3/8

(1)10Y+5=11Y-5+2Y 3Y=10 Y=10/3
(2)0.4x-1.2_2x=1.2-2.6x X=2.4
(3)2y-5=11-6y 8X=16 X=2
(4) 2x-1=5x+7 3X=-8 X=-8/3

10Y+5=11Y-5+2Y 10y-11y-2y=-10 -3y=-10 y=10/3
0.4x-1.2_2x=1.2-2.6x 0.4x-2x+2.6x=2.4 x=2.4
2y-5=11-6y
8y=16
y=2
2x-1=5x+7
3x=-8
x=8/3

10Y+5=11Y-5+2Y
10Y+5 - 10Y=11Y-5+2Y-10Y
5=3Y-5
5+5=3Y-5+5
10=3Y
Y=10/3

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 (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 2(x-y)=5y,x-y=-5 x-y / 5y= (y-x)^2 / ( ) 例X=1 y=21.X+Y=5 X-Y=15 2.2X+3Y=4 5X+6Y=7 3.X+3Y=5 3X+Y=-1 4.2X+Y=3 3X+5Y=11 5.4X+3Y=6 2X+Y=4 6.X+Y=180 X=3Y-10 7.3X-2Y=3 2X-Y=7 8.5X+3Y=7Y X+Y=45 9.3X+4Y=126X+8Y=24 X:6Y=1:4 10.X+Y=138 X-45=Y+53 11.X+Y=60 14Y=20X 12.2X+3Y=15.5 5X+6Y=35 13.X+Y=170 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 (x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5 x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 x+2y=5x-6y=11 3*X=Y X/2=Y/5+11 {2x+y=74x+5y=11 (x+5y)^+(2x+10y)(3x-y)+(3x-y)^ (x+5y)²-(2x+10y)(3x-y)+(3x-y)² 5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解 5x^3y(x-y)^3-10x^4y^3(y-x)^2 5X^3Y(X-Y)-10X^4Y^3(Y-X)^2因式分解