Add 54/15 and 28/70
1st number: 3 9/15, 2nd number: 28/70
54/15 + 28/70 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
54/15 = 54 × 14/15 × 14 = 756/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
28/70 = 28 × 3/70 × 3 = 84/210 - Add the two like fractions:
756/210 + 84/210 = 756 + 84/210 = 840/210 - 840/210 simplified gives 4/1
- So, 54/15 + 28/70 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+56/70 54/30+28/70 54/15+84/70 54/45+28/70 54/75+28/70