Add 1/28 and 6/90
1/28 + 6/90 is 43/420.
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,
1/28 = 1 × 45/28 × 45 = 45/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
6/90 = 6 × 14/90 × 14 = 84/1260 - Add the two like fractions:
45/1260 + 84/1260 = 45 + 84/1260 = 129/1260 - 129/1260 simplified gives 43/420
- So, 1/28 + 6/90 = 43/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+6/90 1/28+12/90 1/56+6/90 3/28+6/90 1/28+18/90 1/84+6/90 5/28+6/90 1/28+30/90 7/28+6/90 1/28+42/90