Add 81/7 and 16/9
1st number: 11 4/7, 2nd number: 1 7/9
81/7 + 16/9 is 841/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
81/7 = 81 × 9/7 × 9 = 729/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
16/9 = 16 × 7/9 × 7 = 112/63 - Add the two like fractions:
729/63 + 112/63 = 729 + 112/63 = 841/63 - So, 81/7 + 16/9 = 841/63
In mixed form: 1322/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+32/9 81/14+16/9 81/7+16/18 81/7+48/9 81/21+16/9 81/7+16/27 81/7+80/9 81/35+16/9 81/7+16/45 81/49+16/9 81/7+16/63