若y1=5x+3,y2=8-x,当y1比y2大1时,x=______数学解答

若y1=5x+3,y2=8-x,当y1比y2大1时,x=_____

人气：341 ℃　时间：2020-06-15 06:42:54

解答

y1 - y2
= 5x + 3 - (8 - x)
= 5x + 3 - 8 + x
= 6x - 5 = 1
=>
6x = 1 + 5
6x = 6
x = 1
所以x = 1