(3x+2y)+(5x-y)i=17-2y求x和y要过程在线等谢谢
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(3x+2y)+(5x-y)i=17-2y求x和y要过程在线等谢谢
(3x+2y)+(5x-y)i=17-2y求x和y要过程在线等谢谢
(3x+2y)+(5x-y)i=17-2y求x和y要过程在线等谢谢
5x-y=0
y=5x
3x+3y=17-2y
3x+25x=17
x=17/28
y=85/28
5x-y=0,
y=5x
(3x+2y)=17-2y
(3x+10x)=17-10x
23x=17,
x=17/23,
y=85/23
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(3x+2y)+(5x-y)i=17-2y求x和y要过程在线等谢谢
把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)= 3(x-y)把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)=3(x-y)²-4(x-y)+7(x-y)-6(x-y)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
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
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求方程的实数x与y的值 (3x+2y)+(5x-y)i=17-2i
求方程实数x与y的值.(3x+2y)+(5x–y)i=17-2i