5x+9y=444,3x=2Y怎么解,

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/17 00:02:25
5x+9y=444,3x=2Y怎么解,5x+9y=444,3x=2Y怎么解,5x+9y=444,3x=2Y怎么解,5x+9y=444,①3x=2Yx=2y/3②把②带到①中5(2y/3)+9y=444

5x+9y=444,3x=2Y怎么解,
5x+9y=444,3x=2Y怎么解,

5x+9y=444,3x=2Y怎么解,
5x+9y=444,①
3x=2Y
x=2y/3 ②
把②带到①中
5(2y/3)+9y=444
10y/3+9y=444
10y+27y=1332
37y=1332
y=36
所以
x=24

5x+9y=444 (1)
3x=2Y (2)
由(2)得3x-2y=0 (3)
(3)×9得 27x-18y=0 (4)
(1)×2得 10x+18y=888 (5)
(4)+(5)得 37x=888
x=24
把x=24代入(2)得y=36
所以原方程组的解为{x=24
{y=36
祝你好运

x=2/3y,将x=2/3y代入5x+9y=444,得到10/3y+9y=444,得到y,再将y代入x=2/3y,得到x,具体值是,Y=1305,X=2610/3