求-6x-7=2x+1 4x+3(2x-3)=12-(x+4)_数学解答

求-6x-7=2x+1 4x+3(2x-3)=12-(x+4)

人气：406 ℃　时间：2020-06-05 07:31:59

解答

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