Add 4/90 and 15/8
1st number: 4/90, 2nd number: 1 7/8
4/90 + 15/8 is 691/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
4/90 = 4 × 4/90 × 4 = 16/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
15/8 = 15 × 45/8 × 45 = 675/360 - Add the two like fractions:
16/360 + 675/360 = 16 + 675/360 = 691/360 - So, 4/90 + 15/8 = 691/360
In mixed form: 1331/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+15/8 4/90+30/8 4/90+15/16 12/90+15/8 4/90+45/8 4/90+15/24 20/90+15/8 4/90+75/8 4/90+15/40 28/90+15/8 4/90+15/56