6\7-x=1\5x 1\5x+x=5\7 6\5x=6\7 x=5\7
x+1\6=3\4 x=3\4-1\6 x=7\12
1\2+x=2\3 x=2\3-1\2 x=1\6
x-3\8=3\16 x=3\16+3\8 x=3\16