x-1/2+1=x-1 3-2(2y-1)=3(2y-1)-2 2/7(x-7)=2-2/3x 5x+1/6=9x+1/
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/06/03 17:21:44
x-1/2+1=x-1 3-2(2y-1)=3(2y-1)-2 2/7(x-7)=2-2/3x 5x+1/6=9x+1/8-1-x/3 3/2|x+5|=5 解方程
x-1/2+1=x-1 x-1+2=2x-2 x=3
3-2(2y-1)=3(2y-1)-2 5=5(2y-1) 2y-1=1 y=1
2/7(x-7)=2-2/3x 2/7x-2=2-2/3x 1/7x+1/3x=2
10x=42 x=4.2
5x+1/6=9x+1/8-1-x/3 5x+1/6+x/3=9x+1/8-1
[7x+7]/6=[9x+9-8]/8 7[x+1]/6=9[x+1]/8-1
28[x+1]-27[x+1]=-24 [x+1]=-24 x=-25
3/2|x+5|=5 |x+5|=10/3 x=-5/3
3-2(2y-1)=3(2y-1)-2 5=5(2y-1) 2y-1=1 y=1
2/7(x-7)=2-2/3x 2/7x-2=2-2/3x 1/7x+1/3x=2
10x=42 x=4.2
5x+1/6=9x+1/8-1-x/3 5x+1/6+x/3=9x+1/8-1
[7x+7]/6=[9x+9-8]/8 7[x+1]/6=9[x+1]/8-1
28[x+1]-27[x+1]=-24 [x+1]=-24 x=-25
3/2|x+5|=5 |x+5|=10/3 x=-5/3
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