Answers

Add 63/70 and 2/80

63/70 + 2/80 is 37/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   63/70 = 63 × 8/70 × 8 = 504/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   2/80 = 2 × 7/80 × 7 = 14/560
4. Add the two like fractions:
   504/560 + 14/560 = 504 + 14/560 = 518/560
5. 518/560 simplified gives 37/40
6. So, 63/70 + 2/80 = 37/40

MathStep (Works offline)

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

Related: ⁶³/₇₀+⁴/₈₀ ⁶³/₇₀+⁶/₈₀ ⁶³/₇₀+¹⁰/₈₀ ⁶³/₇₀+¹⁴/₈₀

Add Fractions Calculator