Add 21/63 and 4/80
21/63 + 4/80 is 23/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
21/63 = 21 × 80/63 × 80 = 1680/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
4/80 = 4 × 63/80 × 63 = 252/5040 - Add the two like fractions:
1680/5040 + 252/5040 = 1680 + 252/5040 = 1932/5040 - 1932/5040 simplified gives 23/60
- So, 21/63 + 4/80 = 23/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+4/80 21/63+8/80 21/63+12/80 21/63+20/80 21/63+28/80