Add 3/20 and 84/63
1st number: 3/20, 2nd number: 1 21/63
3/20 + 84/63 is 89/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
3/20 = 3 × 63/20 × 63 = 189/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
84/63 = 84 × 20/63 × 20 = 1680/1260 - Add the two like fractions:
189/1260 + 1680/1260 = 189 + 1680/1260 = 1869/1260 - 1869/1260 simplified gives 89/60
- So, 3/20 + 84/63 = 89/60
In mixed form: 129/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+84/63 3/40+84/63 9/20+84/63 3/60+84/63 15/20+84/63 21/20+84/63