Add 21/63 and 4/35
21/63 + 4/35 is 47/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
4/35 = 4 × 9/35 × 9 = 36/315 - Add the two like fractions:
105/315 + 36/315 = 105 + 36/315 = 141/315 - 141/315 simplified gives 47/105
- So, 21/63 + 4/35 = 47/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+4/35 21/63+8/35 21/63+4/70 21/63+12/35 21/63+20/35 21/63+28/35