Add 10/84 and 45/30
1st number: 10/84, 2nd number: 1 15/30
10/84 + 45/30 is 34/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 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 30 × 14 = 420,
45/30 = 45 × 14/30 × 14 = 630/420 - Add the two like fractions:
50/420 + 630/420 = 50 + 630/420 = 680/420 - 680/420 simplified gives 34/21
- So, 10/84 + 45/30 = 34/21
In mixed form: 113/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84+45/30 10/84+90/30 10/84+45/60 30/84+45/30 10/84+45/90 50/84+45/30 70/84+45/30