Add 21/2 and 90/25
1st number: 10 1/2, 2nd number: 3 15/25
21/2 + 90/25 is 141/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 25 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 2 × 25 = 50,
21/2 = 21 × 25/2 × 25 = 525/50 - Likewise, for the 2nd fraction, since 25 × 2 = 50,
90/25 = 90 × 2/25 × 2 = 180/50 - Add the two like fractions:
525/50 + 180/50 = 525 + 180/50 = 705/50 - 705/50 simplified gives 141/10
- So, 21/2 + 90/25 = 141/10
In mixed form: 141/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+90/25 21/4+90/25 21/2+90/50 63/2+90/25 21/6+90/25 21/2+90/75 21/10+90/25 21/14+90/25