Add 7/63 and 42/20
1st number: 7/63, 2nd number: 2 2/20
7/63 + 42/20 is 199/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
7/63 = 7 × 20/63 × 20 = 140/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
42/20 = 42 × 63/20 × 63 = 2646/1260 - Add the two like fractions:
140/1260 + 2646/1260 = 140 + 2646/1260 = 2786/1260 - 2786/1260 simplified gives 199/90
- So, 7/63 + 42/20 = 199/90
In mixed form: 219/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63+42/20 7/63+84/20 7/63+42/40 21/63+42/20 7/63+42/60 35/63+42/20 49/63+42/20