Add 12/30 and 72/63
1st number: 12/30, 2nd number: 1 9/63
12/30 + 72/63 is 54/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
12/30 = 12 × 21/30 × 21 = 252/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
72/63 = 72 × 10/63 × 10 = 720/630 - Add the two like fractions:
252/630 + 720/630 = 252 + 720/630 = 972/630 - 972/630 simplified gives 54/35
- So, 12/30 + 72/63 = 54/35
In mixed form: 119/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+72/63 12/60+72/63 36/30+72/63 12/90+72/63 60/30+72/63 84/30+72/63