{x/3+y/5=1 3(x-1)=11-2(y+4)
1个回答
x=12
y=-15
相关问题
1.x-(3x-1)=5(x+2) 2.2(x+1)=1-(x+3) 3.20-y=6y-4(y-11)4.2-(4-y
(1)2x+3y=16 3x-2y=11 (2)3x-4y=1 5x-6y=3
(1)3/2x-1≤6/3x-4 (2) {3x+4y=11 5x-y=3 (3){x-3(x-1)≤7 1-3/2-5
1.{x/3-y/2=1 3x-4y=11 2.{3x+2y=-2 x-y=-4
(1)2X-Y=1 3X-2Y =1 (2)4X-3Y=11 2X+Y=13 (3)3X+Y=1 1/2X+1/4Y=0
1.{x+2y=4,2x+5y-2z=11,3x-5y+2z=-1
1,{3x+2y=13 {5x-2y=11 ,2,{5x+2y=25 {3x+4y=15
3/x+4/y=2(1)5x-y=11(2)求解过程
解下列方程:5(x-5)+2x=-4.3(x-1)-2(2x+3)=0.4y-3(20-y)=6y-7(11-y).
(1)﹛2x-y=5 (2) 4x-y=1 (3)5x+y=2 7x-3y=20 y=2x+3 x-3y=4 (4)3x