{2x-1/5 + 3n-1/4 =2,3x+1/3 - 3y+2 /4 = 4/3

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/07 16:58:46
{2x-1/5+3n-1/4=2,3x+1/3-3y+2/4=4/3{2x-1/5+3n-1/4=2,3x+1/3-3y+2/4=4/3{2x-1/5+3n-1/4=2,3x+1/3-3y+2/4=4

{2x-1/5 + 3n-1/4 =2,3x+1/3 - 3y+2 /4 = 4/3
{2x-1/5 + 3n-1/4 =2,3x+1/3 - 3y+2 /4 = 4/3

{2x-1/5 + 3n-1/4 =2,3x+1/3 - 3y+2 /4 = 4/3
题目应是2x-1/5 + 3y-1/4 =2
4(2x-1)+5(3y-1)=40
8x+15y=49 (1)
3x+1/3 - 3y+2 /4 = 4/3
4(3x+1) -3(3y+2)=16
12x-9y=18 (2)
(1)*3-(2)*2得
24x+45y-24x+18y=49*3-18*2
63y=111
y=111/63
x=237/84