-x = - 2/5x + 1 2x - 1/3 = - x/3 +2 怎么计算?-x = - 2/5x + 1 2x - 1/3_数学解答

-x = - 2/5x + 1 2x - 1/3 = - x/3 +2 怎么计算?
-x = - 2/5x + 1 2x - 1/3 = - x/3 +2 怎么计算？

人气：298 ℃　时间：2020-02-04 23:33:25

解答

-x = - 2/5x + 1
-x+2/5x=1
-3/5x=1
x=-5/3
2x - 1/3 = - x/3 +2
6x-1=-x+6
7x=7
x=1