Add 9/7 and 42/63
1st number: 1 2/7, 2nd number: 42/63
9/7 + 42/63 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
9/7 = 9 × 9/7 × 9 = 81/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
42/63 = 42 × 1/63 × 1 = 42/63 - Add the two like fractions:
81/63 + 42/63 = 81 + 42/63 = 123/63 - 123/63 simplified gives 41/21
- So, 9/7 + 42/63 = 41/21
In mixed form: 120/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+42/63 9/7+84/63 9/14+42/63 27/7+42/63 9/21+42/63 45/7+42/63 9/35+42/63 63/7+42/63 9/49+42/63