Add 4/42 and 30/20
1st number: 4/42, 2nd number: 1 10/20
4/42 + 30/20 is 67/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
4/42 = 4 × 10/42 × 10 = 40/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
30/20 = 30 × 21/20 × 21 = 630/420 - Add the two like fractions:
40/420 + 630/420 = 40 + 630/420 = 670/420 - 670/420 simplified gives 67/42
- So, 4/42 + 30/20 = 67/42
In mixed form: 125/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+30/20 4/42+60/20 4/84+30/20 4/42+30/40 12/42+30/20 4/42+90/20 4/42+30/60 20/42+30/20 28/42+30/20