Add 10/84 and 45/20
1st number: 10/84, 2nd number: 2 5/20
10/84 + 45/20 is 199/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
45/20 = 45 × 21/20 × 21 = 945/420 - Add the two like fractions:
50/420 + 945/420 = 50 + 945/420 = 995/420 - 995/420 simplified gives 199/84
- So, 10/84 + 45/20 = 199/84
In mixed form: 231/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84+45/20 10/84+90/20 10/84+45/40 30/84+45/20 10/84+45/60 50/84+45/20 70/84+45/20