Add 72/60 and 63/54, Solve 1 12/60 + 1 9/54 as a fraction

Add 72/60 and 63/54

1^st number: 1 12/60, 2^nd number: 1 9/54

72/60 + 63/54 is 71/30.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 54 is 540

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 60 × 9 = 540,
72/60 = 72 × 9/60 × 9 = 648/540
Likewise, for the 2nd fraction, since 54 × 10 = 540,
63/54 = 63 × 10/54 × 10 = 630/540
Add the two like fractions:
648/540 + 630/540 = 648 + 630/540 = 1278/540
1278/540 simplified gives 71/30
So, 72/60 + 63/54 = 71/30
In mixed form: 211/30

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad