Add 90/28 and 36/40
1st number: 3 6/28, 2nd number: 36/40
90/28 + 36/40 is 144/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
90/28 = 90 × 10/28 × 10 = 900/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
36/40 = 36 × 7/40 × 7 = 252/280 - Add the two like fractions:
900/280 + 252/280 = 900 + 252/280 = 1152/280 - 1152/280 simplified gives 144/35
- So, 90/28 + 36/40 = 144/35
In mixed form: 44/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+72/40 90/56+36/40 90/28+36/80 90/84+36/40