Add 63/45 and 27/30, Solve 1 18/45 + 27/30 as a fraction

Add 63/45 and 27/30

1^st number: 1 18/45, 2^nd number: 27/30

63/45 + 27/30 is 23/10.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 45 × 2 = 90,
63/45 = 63 × 2/45 × 2 = 126/90
Likewise, for the 2nd fraction, since 30 × 3 = 90,
27/30 = 27 × 3/30 × 3 = 81/90
Add the two like fractions:
126/90 + 81/90 = 126 + 81/90 = 207/90
207/90 simplified gives 23/10
So, 63/45 + 27/30 = 23/10
In mixed form: 23/10

MathStep (Works offline)

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