求不等式组 3(x-1)+13>5x-2(5-x) 的解集 5-(2x+1)<3-6x

问题描述:

求不等式组 3(x-1)+13>5x-2(5-x) 的解集 5-(2x+1)<3-6x

3(x-1)+13>5x-2(5-x)
3x-3+13>5x-10+2x
7x-3x4xx5-(2x+1)<3-6x
5-2x-16x-2xx

3(x-1)+13>5x-2(5-x)
3x+10>7x-10
4xx5-(2x+1)4-2x4xx{x|x则不等式组的解集为{x|x

3(x-1)+13>5x-2(5-x)
3x-3+13>5x-10+2x
3x-5x-2x>3-13-10
-4x>-20
x