(1).已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=0,则x=( )
问题描述:
(1).已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=0,则x=( )
答
-2/3x+1+1/6x-5=0
-3/6x=4
x=-8