Add 21/63 and 8/35
21/63 + 8/35 is 59/105.
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,
8/35 = 8 × 9/35 × 9 = 72/315 - Add the two like fractions:
105/315 + 72/315 = 105 + 72/315 = 177/315 - 177/315 simplified gives 59/105
- So, 21/63 + 8/35 = 59/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+8/35 21/63+16/35 21/63+8/70 21/63+24/35 21/63+40/35 21/63+56/35