Answers

Add 63/72 and 56/20

1^st number: 63/72, 2^nd number: 2 16/20

63/72 + 56/20 is 147/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   63/72 = 63 × 5/72 × 5 = 315/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   56/20 = 56 × 18/20 × 18 = 1008/360
4. Add the two like fractions:
   315/360 + 1008/360 = 315 + 1008/360 = 1323/360
5. 1323/360 simplified gives 147/40
6. So, 63/72 + 56/20 = 147/40
   In mixed form: 327/40

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁶³/₇₂+⁵⁶/₄₀ ⁶³/₇₂+⁵⁶/₆₀

Add Fractions Calculator