Add 1/28 and 90/70
1st number: 1/28, 2nd number: 1 20/70
1/28 + 90/70 is 37/28.
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,
1/28 = 1 × 5/28 × 5 = 5/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Add the two like fractions:
5/140 + 180/140 = 5 + 180/140 = 185/140 - 185/140 simplified gives 37/28
- So, 1/28 + 90/70 = 37/28
In mixed form: 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+90/70 1/56+90/70 3/28+90/70 1/84+90/70 5/28+90/70 7/28+90/70