Add 90/28 and 36/45
1st number: 3 6/28, 2nd number: 36/45
90/28 + 36/45 is 281/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
90/28 = 90 × 45/28 × 45 = 4050/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
36/45 = 36 × 28/45 × 28 = 1008/1260 - Add the two like fractions:
4050/1260 + 1008/1260 = 4050 + 1008/1260 = 5058/1260 - 5058/1260 simplified gives 281/70
- So, 90/28 + 36/45 = 281/70
In mixed form: 41/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+72/45 90/56+36/45 90/28+36/90 90/84+36/45