Answer:
One denominator you could use to add the two fractions 3/1 and 8/12 is 12.
Step-by-step explanation:
When adding the fractions 3/1 and 8/12, the first step is to multiply both the numerator and denominator by the same number until you end up with common denominators. Here, the best thing to do is multiply both 3 and 1 by 12 which ends in 36/12; from that point on, you just do the simple math of 36/12 + 8/12.