Add 72/63 and 30/12
1st number: 1 9/63, 2nd number: 2 6/12
72/63 + 30/12 is 51/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
72/63 = 72 × 4/63 × 4 = 288/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
30/12 = 30 × 21/12 × 21 = 630/252 - Add the two like fractions:
288/252 + 630/252 = 288 + 630/252 = 918/252 - 918/252 simplified gives 51/14
- So, 72/63 + 30/12 = 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+60/12 72/63+30/24 72/63+90/12 72/63+30/36 72/63+30/60 72/63+30/84