(10-3.x).127=127 ac giải giúp em bài nay ạ

Question

hienchau · Answer

Đ&aacute;p &aacute;n:   $x=3$   C&aacute;ch l&agrave;m:   $(10-3.x).127=127$ $10-3x=127/127$ $10-3x=1$   $3x=10-1$   $3x=9$   $x=3$

havu · Answer

`(10-3x)127=127`   `&rArr;10-3x=127:127=1`   `&rArr;3x=10-1=9`   `&rArr;x=9:3=3`   Vậy `x=3`