Add 81/7 and 12/54
1st number: 11 4/7, 2nd number: 12/54
81/7 + 12/54 is 743/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
81/7 = 81 × 54/7 × 54 = 4374/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
12/54 = 12 × 7/54 × 7 = 84/378 - Add the two like fractions:
4374/378 + 84/378 = 4374 + 84/378 = 4458/378 - 4458/378 simplified gives 743/63
- So, 81/7 + 12/54 = 743/63
In mixed form: 1150/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+24/54 81/14+12/54 81/7+36/54 81/21+12/54 81/7+60/54 81/35+12/54 81/7+84/54 81/49+12/54