Answers

Add 12/84 and 3/80

12/84 + 3/80 is 101/560.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 84 × 20 = 1680,
   12/84 = 12 × 20/84 × 20 = 240/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   3/80 = 3 × 21/80 × 21 = 63/1680
4. Add the two like fractions:
   240/1680 + 63/1680 = 240 + 63/1680 = 303/1680
5. 303/1680 simplified gives 101/560
6. So, 12/84 + 3/80 = 101/560

MathStep (Works offline)

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

Related: ²⁴/₈₄+³/₈₀ ¹²/₈₄+⁶/₈₀ ³⁶/₈₄+³/₈₀ ¹²/₈₄+⁹/₈₀ ⁶⁰/₈₄+³/₈₀ ¹²/₈₄+¹⁵/₈₀ ¹²/₈₄+²¹/₈₀

Add Fractions Calculator