Add 42/21 and 35/4
1st number: 2 0/21, 2nd number: 8 3/4
42/21 + 35/4 is 43/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
42/21 = 42 × 4/21 × 4 = 168/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
35/4 = 35 × 21/4 × 21 = 735/84 - Add the two like fractions:
168/84 + 735/84 = 168 + 735/84 = 903/84 - 903/84 simplified gives 43/4
- So, 42/21 + 35/4 = 43/4
In mixed form: 103/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+35/4 42/21+70/4 42/21+35/8 42/63+35/4 42/21+35/12 42/21+35/20 42/21+35/28