Add 72/63 and 75/30
1st number: 1 9/63, 2nd number: 2 15/30
72/63 + 75/30 is 51/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
72/63 = 72 × 10/63 × 10 = 720/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
75/30 = 75 × 21/30 × 21 = 1575/630 - Add the two like fractions:
720/630 + 1575/630 = 720 + 1575/630 = 2295/630 - 2295/630 simplified gives 51/14
- So, 72/63 + 75/30 = 51/14
In mixed form: 39/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/63+75/60 72/63+75/90