Add 36/28 and 21/70
1st number: 1 8/28, 2nd number: 21/70
36/28 + 21/70 is 111/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
36/28 = 36 × 5/28 × 5 = 180/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Add the two like fractions:
180/140 + 42/140 = 180 + 42/140 = 222/140 - 222/140 simplified gives 111/70
- So, 36/28 + 21/70 = 111/70
In mixed form: 141/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28+21/70 36/28+42/70 36/56+21/70 36/28+63/70 36/84+21/70