Add 21/90 and 50/8
1st number: 21/90, 2nd number: 6 2/8
21/90 + 50/8 is 389/60.
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,
21/90 = 21 × 4/90 × 4 = 84/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
50/8 = 50 × 45/8 × 45 = 2250/360 - Add the two like fractions:
84/360 + 2250/360 = 84 + 2250/360 = 2334/360 - 2334/360 simplified gives 389/60
- So, 21/90 + 50/8 = 389/60
In mixed form: 629/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90+50/8 21/90+50/16 63/90+50/8 21/90+50/24 21/90+50/40 21/90+50/56