Add 48/40 and 21/63
1st number: 1 8/40, 2nd number: 21/63
48/40 + 21/63 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
48/40 = 48 × 63/40 × 63 = 3024/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
21/63 = 21 × 40/63 × 40 = 840/2520 - Add the two like fractions:
3024/2520 + 840/2520 = 3024 + 840/2520 = 3864/2520 - 3864/2520 simplified gives 23/15
- So, 48/40 + 21/63 = 23/15
In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/40+21/63 48/40+42/63 48/80+21/63