Add 4/90 and 30/28
1st number: 4/90, 2nd number: 1 2/28
4/90 + 30/28 is 703/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
4/90 = 4 × 14/90 × 14 = 56/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
30/28 = 30 × 45/28 × 45 = 1350/1260 - Add the two like fractions:
56/1260 + 1350/1260 = 56 + 1350/1260 = 1406/1260 - 1406/1260 simplified gives 703/630
- So, 4/90 + 30/28 = 703/630
In mixed form: 173/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+30/28 4/90+60/28 4/90+30/56 12/90+30/28 4/90+90/28 4/90+30/84 20/90+30/28 28/90+30/28