Add 30/28 and 8/90
1st number: 1 2/28, 2nd number: 8/90
30/28 + 8/90 is 731/630.
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,
30/28 = 30 × 45/28 × 45 = 1350/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
8/90 = 8 × 14/90 × 14 = 112/1260 - Add the two like fractions:
1350/1260 + 112/1260 = 1350 + 112/1260 = 1462/1260 - 1462/1260 simplified gives 731/630
- So, 30/28 + 8/90 = 731/630
In mixed form: 1101/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+8/90 30/28+16/90 30/56+8/90 90/28+8/90 30/28+24/90 30/84+8/90 30/28+40/90 30/28+56/90