First convert it to improper fraction:
5 7/12=67/12
1 1/6=7/6
Then Find their LCD
6:6,12
12:12
Divide the LCD to each denominator then multiply on numerator, then the LCD will be the new denominator:
67/12-7/6
67/12-14/12
Simplify:
53/12 or 4 5/12
Hope this helps =)
