Add 20/84 and 75/40
1st number: 20/84, 2nd number: 1 35/40
20/84 + 75/40 is 355/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
20/84 = 20 × 10/84 × 10 = 200/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
75/40 = 75 × 21/40 × 21 = 1575/840 - Add the two like fractions:
200/840 + 1575/840 = 200 + 1575/840 = 1775/840 - 1775/840 simplified gives 355/168
- So, 20/84 + 75/40 = 355/168
In mixed form: 219/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/84+75/40 20/84+75/80 60/84+75/40