Add 15/84 and 50/40
1st number: 15/84, 2nd number: 1 10/40
15/84 + 50/40 is 10/7.
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,
15/84 = 15 × 10/84 × 10 = 150/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
50/40 = 50 × 21/40 × 21 = 1050/840 - Add the two like fractions:
150/840 + 1050/840 = 150 + 1050/840 = 1200/840 - 1200/840 simplified gives 10/7
- So, 15/84 + 50/40 = 10/7
In mixed form: 13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84+50/40 15/84+50/80 45/84+50/40 75/84+50/40