Add 45/40 and 15/84
1st number: 1 5/40, 2nd number: 15/84
45/40 + 15/84 is 73/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
45/40 = 45 × 21/40 × 21 = 945/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
15/84 = 15 × 10/84 × 10 = 150/840 - Add the two like fractions:
945/840 + 150/840 = 945 + 150/840 = 1095/840 - 1095/840 simplified gives 73/56
- So, 45/40 + 15/84 = 73/56
In mixed form: 117/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+15/84 45/40+30/84 45/80+15/84 45/40+45/84 45/40+75/84