来自高新贺的问题
3X+5Y=15(1):｛2X-3Y=-4X.Y各是多少?X/3+Y/4=1(2)｛2X-3Y=5X.Y各是多少?X-2Y+3Z=0(3)｛3X+2Y+5Z=122X-4Y-Z=-7X.Y.Z各是多少?2X-3Y+4Z=12(4)｛X-Y+3Z=44X+Y-3Z=4X.Y.Z各是多少?2002X+2003Y=6007(5)｛2003X+2002Y=6008X.Y各是
3X+5Y=15
(1):｛
2X-3Y=-4
X.Y各是多少?
X/3+Y/4=1
(2)｛
2X-3Y=5
X.Y各是多少?
X-2Y+3Z=0
(3)｛3X+2Y+5Z=12
2X-4Y-Z=-7
X.Y.Z各是多少?
2X-3Y+4Z=12
(4)｛X-Y+3Z=4
4X+Y-3Z=4
X.Y.Z各是多少?
2002X+2003Y=6007
(5)｛
2003X+2002Y=6008
X.Y各是多少?
X:Y:Z=1:3:5
(6)｛
X+Y+Z=?
要说明原因哦!
