Add 42/21 and 16/4
1st number: 2 0/21, 2nd number: 4 0/4
42/21 + 16/4 is 6/1.
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,
16/4 = 16 × 21/4 × 21 = 336/84 - Add the two like fractions:
168/84 + 336/84 = 168 + 336/84 = 504/84 - 504/84 simplified gives 6/1
- So, 42/21 + 16/4 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+16/4 42/21+32/4 42/21+16/8 42/21+48/4 42/63+16/4 42/21+16/12 42/21+80/4 42/21+16/20 42/21+16/28