Add 63/56 and 75/20
1st number: 1 7/56, 2nd number: 3 15/20
63/56 + 75/20 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
63/56 = 63 × 5/56 × 5 = 315/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
75/20 = 75 × 14/20 × 14 = 1050/280 - Add the two like fractions:
315/280 + 1050/280 = 315 + 1050/280 = 1365/280 - 1365/280 simplified gives 39/8
- So, 63/56 + 75/20 = 39/8
In mixed form: 47/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/56+75/40 63/56+75/60