Add 90/28 and 40/90
1st number: 3 6/28, 2nd number: 40/90
90/28 + 40/90 is 461/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 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 90 × 14 = 1260,
40/90 = 40 × 14/90 × 14 = 560/1260 - Add the two like fractions:
4050/1260 + 560/1260 = 4050 + 560/1260 = 4610/1260 - 4610/1260 simplified gives 461/126
- So, 90/28 + 40/90 = 461/126
In mixed form: 383/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+80/90 90/56+40/90 90/84+40/90