Add 75/84 and 4/30
75/84 + 4/30 is 431/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
75/84 = 75 × 5/84 × 5 = 375/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
4/30 = 4 × 14/30 × 14 = 56/420 - Add the two like fractions:
375/420 + 56/420 = 375 + 56/420 = 431/420 - So, 75/84 + 4/30 = 431/420
In mixed form: 111/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84+8/30 75/84+4/60 75/84+12/30 75/84+4/90 75/84+20/30 75/84+28/30