Add 21/56 and 75/63
1st number: 21/56, 2nd number: 1 12/63
21/56 + 75/63 is 263/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
75/63 = 75 × 8/63 × 8 = 600/504 - Add the two like fractions:
189/504 + 600/504 = 189 + 600/504 = 789/504 - 789/504 simplified gives 263/168
- So, 21/56 + 75/63 = 263/168
In mixed form: 195/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+75/63 63/56+75/63