Add 40/63 and 81/70
1st number: 40/63, 2nd number: 1 11/70
40/63 + 81/70 is 1129/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
40/63 = 40 × 10/63 × 10 = 400/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630 - Add the two like fractions:
400/630 + 729/630 = 400 + 729/630 = 1129/630 - So, 40/63 + 81/70 = 1129/630
In mixed form: 1499/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63+81/70