求-6x-7=2x+1 4x+3(2x-3)=12-(x+4)

分类: 作业答案 • 2022-04-05 23:32:26

问题描述：

答

1,-6x-7=2x+1
8x = -8
x = -1
2,4x+3(2x-3) = 12 - (x+4)
4x+6x-9 = 12 -x -4
10x-9 = 8-x
11x=17
x=17/11