Answers

Add 42/63 and 24/80

42/63 + 24/80 is 29/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   42/63 = 42 × 80/63 × 80 = 3360/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   24/80 = 24 × 63/80 × 63 = 1512/5040
4. Add the two like fractions:
   3360/5040 + 1512/5040 = 3360 + 1512/5040 = 4872/5040
5. 4872/5040 simplified gives 29/30
6. So, 42/63 + 24/80 = 29/30

MathStep (Works offline)

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

Related: ⁸⁴/₆₃+²⁴/₈₀ ⁴²/₆₃+⁴⁸/₈₀ ⁴²/₆₃+⁷²/₈₀

Add Fractions Calculator