13/16-x=3/8解:两边同时乘以16得:13-16x=616x=13-6x=7/16很高兴为你解答!希望采纳!
13/16-x=3/8 解:13-16x=616x=7x=7/16
13/16-x=3/8x=13/16-3/8x=7/16
13/16-x=3/8-x=3/8-13/16 x=13/16-3/8 x=13/16-6/16 x=7/16
13/16-x=3/8 X=13/16-3/8X=7/16