Add 70/42 and 56/54
1st number: 1 28/42, 2nd number: 1 2/54
70/42 + 56/54 is 73/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
70/42 = 70 × 9/42 × 9 = 630/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
56/54 = 56 × 7/54 × 7 = 392/378 - Add the two like fractions:
630/378 + 392/378 = 630 + 392/378 = 1022/378 - 1022/378 simplified gives 73/27
- So, 70/42 + 56/54 = 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: 70/84+56/54