Add 90/28 and 15/70
1st number: 3 6/28, 2nd number: 15/70
90/28 + 15/70 is 24/7.
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,
90/28 = 90 × 5/28 × 5 = 450/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Add the two like fractions:
450/140 + 30/140 = 450 + 30/140 = 480/140 - 480/140 simplified gives 24/7
- So, 90/28 + 15/70 = 24/7
In mixed form: 33/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+30/70 90/56+15/70 90/28+45/70 90/84+15/70 90/28+75/70