(x-3)⼀2+(2x-4)⼀3+(3x-5)⼀4+……+(8x-10)⼀9=(3x-1)⼀2+(4x-2)⼀3+……+(10x-8)⼀9 x=

2024-11-30 01:22:07
推荐回答(1个)
回答1:

解:(-2x-2)/2+(-2x-2)/3+(-2x-2)/4+…+(-2x-2)/9=0
(-2x-2)*(1/2+1/3+1/4+1/5+…+1/9)=0
-2x-2=0
-2x=2
x=-1