代入法, 由(1)可得 y=35x 代入(2) 即 x5(35x)=2 x1525x=2 24x=13 x= 13/24 代入到 y=35x 即y= 7/24也可以用消元法,具体看书上例题就可以啦! 5xy3和85y2怎么解 来自:门户网站 {5x y =3 {x 5y =2 怎么解? >> 代入法, 由 (1)可得 y=35x 代入 (2) 即 x5 (35x)=2 x1525x=2 24x=13 x= 13/24 代入到 y=35x 即y= 7/24 也可以用消元法,具体看书上例题就可以啦!I'm guessing you going over substitution and elimination problems What i would do is line the problem up like this5xy=23x6y=12 you want to either get the Ys or the Xs to cancel each other out So I will use the Ys its easier because all you will have to do is (multiply) the 5xy=2 by (6) and that will give you 30x – 6y = 12
X Y 3 And 2x 5y 12 Novocom Top