Add 9/60 and 72/45, Solve 9/60 + 1 27/45 as a fraction

Add 9/60 and 72/45

1^st number: 9/60, 2^nd number: 1 27/45

9/60 + 72/45 is 7/4.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 45 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 60 × 3 = 180,
9/60 = 9 × 3/60 × 3 = 27/180
Likewise, for the 2nd fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180
Add the two like fractions:
27/180 + 288/180 = 27 + 288/180 = 315/180
315/180 simplified gives 7/4
So, 9/60 + 72/45 = 7/4
In mixed form: 13/4

MathStep (Works offline)

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