Add 10/40 and 81/63
1st number: 10/40, 2nd number: 1 18/63
10/40 + 81/63 is 43/28.
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,
10/40 = 10 × 63/40 × 63 = 630/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
81/63 = 81 × 40/63 × 40 = 3240/2520 - Add the two like fractions:
630/2520 + 3240/2520 = 630 + 3240/2520 = 3870/2520 - 3870/2520 simplified gives 43/28
- So, 10/40 + 81/63 = 43/28
In mixed form: 115/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+81/63 10/80+81/63 30/40+81/63 50/40+81/63 70/40+81/63