Add 42/50 and 21/63
42/50 + 21/63 is 88/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 63 is 3150
Next, find the equivalent fraction of both fractional numbers with denominator 3150 - For the 1st fraction, since 50 × 63 = 3150,
42/50 = 42 × 63/50 × 63 = 2646/3150 - Likewise, for the 2nd fraction, since 63 × 50 = 3150,
21/63 = 21 × 50/63 × 50 = 1050/3150 - Add the two like fractions:
2646/3150 + 1050/3150 = 2646 + 1050/3150 = 3696/3150 - 3696/3150 simplified gives 88/75
- So, 42/50 + 21/63 = 88/75
In mixed form: 113/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50+21/63 42/50+42/63