Add 28/27 and 70/42
1st number: 1 1/27, 2nd number: 1 28/42
28/27 + 70/42 is 73/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
28/27 = 28 × 14/27 × 14 = 392/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
70/42 = 70 × 9/42 × 9 = 630/378 - Add the two like fractions:
392/378 + 630/378 = 392 + 630/378 = 1022/378 - 1022/378 simplified gives 73/27
- So, 28/27 + 70/42 = 73/27
In mixed form: 219/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/27+70/42 28/54+70/42 28/27+70/84 84/27+70/42 28/81+70/42