Answers

Add 54/80 and 56/40

1^st number: 54/80, 2^nd number: 1 16/40

54/80 + 56/40 is 83/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 40 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   54/80 = 54 × 1/80 × 1 = 54/80
3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
   56/40 = 56 × 2/40 × 2 = 112/80
4. Add the two like fractions:
   54/80 + 112/80 = 54 + 112/80 = 166/80
5. 166/80 simplified gives 83/40
6. So, 54/80 + 56/40 = 83/40
   In mixed form: 23/40

MathStep (Works offline)

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

Related: ⁵⁴/₈₀+⁵⁶/₈₀

Add Fractions Calculator