Add 84/60 and 81/42
1st number: 1 24/60, 2nd number: 1 39/42
84/60 + 81/42 is 233/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
84/60 = 84 × 7/60 × 7 = 588/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
81/42 = 81 × 10/42 × 10 = 810/420 - Add the two like fractions:
588/420 + 810/420 = 588 + 810/420 = 1398/420 - 1398/420 simplified gives 233/70
- So, 84/60 + 81/42 = 233/70
In mixed form: 323/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/60+81/84