Answers

Add 42/80 and 80/60

1^st number: 42/80, 2^nd number: 1 20/60

42/80 + 80/60 is 223/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 60 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 80 × 3 = 240,
   42/80 = 42 × 3/80 × 3 = 126/240
3. Likewise, for the 2nd fraction, since 60 × 4 = 240,
   80/60 = 80 × 4/60 × 4 = 320/240
4. Add the two like fractions:
   126/240 + 320/240 = 126 + 320/240 = 446/240
5. 446/240 simplified gives 223/120
6. So, 42/80 + 80/60 = 223/120
   In mixed form: 1103/120

MathStep (Works offline)

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

Related: ⁸⁴/₈₀+⁸⁰/₆₀

Add Fractions Calculator