Subtract 5/12 from 3/20

Long, detailed solution, we make the denominator the same first

5/12, times 20 to both numerator and denominator, 100/240

3/20, times 12 to both numerator and denominator = 36/240

so 36/240 - 100/240 = - 64/240 = - 4/15

If u subtract ur anwser would be 4/15