Add 81/40 and 7/63
1st number: 2 1/40, 2nd number: 7/63
81/40 + 7/63 is 769/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
81/40 = 81 × 63/40 × 63 = 5103/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
7/63 = 7 × 40/63 × 40 = 280/2520 - Add the two like fractions:
5103/2520 + 280/2520 = 5103 + 280/2520 = 5383/2520 - 5383/2520 simplified gives 769/360
- So, 81/40 + 7/63 = 769/360
In mixed form: 249/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40+14/63 81/80+7/63 81/40+21/63 81/40+35/63 81/40+49/63