Add 14/20 and 30/42
14/20 + 30/42 is 99/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
14/20 = 14 × 21/20 × 21 = 294/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
30/42 = 30 × 10/42 × 10 = 300/420 - Add the two like fractions:
294/420 + 300/420 = 294 + 300/420 = 594/420 - 594/420 simplified gives 99/70
- So, 14/20 + 30/42 = 99/70
In mixed form: 129/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/20+30/42 14/20+60/42 14/40+30/42 14/20+30/84 42/20+30/42 14/20+90/42 14/60+30/42 70/20+30/42 98/20+30/42