Add 48/42 and 40/20
1st number: 1 6/42, 2nd number: 2 0/20
48/42 + 40/20 is 22/7.
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,
48/42 = 48 × 10/42 × 10 = 480/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
40/20 = 40 × 21/20 × 21 = 840/420 - Add the two like fractions:
480/420 + 840/420 = 480 + 840/420 = 1320/420 - 1320/420 simplified gives 22/7
- So, 48/42 + 40/20 = 22/7
In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/42+40/20 48/42+80/20 48/84+40/20 48/42+40/60