3x+3y+2x-2y=3 5x+y=3①
4x+4y-5x+5y=2 -x+9y=2②
①+②*5得46y=13 y=13/46
带入②得x=-2+117/46=25/46
所以x=25/46
y=13/46
3x+3y+2x-2y=36,4x+4y-5x+5y=2的解
3个回答
相关问题
-
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组
-
解方程组:3x+2y\4=2x+y+2\5=-x+5y\3.
-
2X=3Y,4x-5y=2 -6x+5y=3,3x=4y 2x+3y=5,3x=y-9 3x=1-y,3x=2y-5
-
解方程组:(x+y)/2-(x-y)/3=2,4(x+y)-5(x-y)=2,
-
解二元一次方程2x-3y/4+2(x+2y)/5=1 3(2x-3y)/4-x+2y/5+4=0
-
解二元一次方程2x-3y/4+2(x+2y)/5=1 3(2x-3y)/4-x+2y/5+4=0
-
一道解方程组的题!(2x+5)(y+3)=(x+4)(2y+3)(3x+2)(5y+6)=5(x+1)(3y+4)
-
解方程组：1.{x+y=4①,2x-y=5 ② 2.{2x+3y=4①,5x+6y=7②
-
解方程组.3y=x+5 .2x+5y=23 2x+3y=7 .3x-5y=1 3x+5y=5 .3x-4y=23
-
x^5+x^4y-2x^3y^2-x^2y^3-xy^4+2y^5