Add 90/28 and 21/50
1st number: 3 6/28, 2nd number: 21/50
90/28 + 21/50 is 636/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
90/28 = 90 × 25/28 × 25 = 2250/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
21/50 = 21 × 14/50 × 14 = 294/700 - Add the two like fractions:
2250/700 + 294/700 = 2250 + 294/700 = 2544/700 - 2544/700 simplified gives 636/175
- So, 90/28 + 21/50 = 636/175
In mixed form: 3111/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+42/50 90/56+21/50 90/28+63/50 90/84+21/50