Add 60/42 and 84/80
1st number: 1 18/42, 2nd number: 1 4/80
60/42 + 84/80 is 347/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
60/42 = 60 × 40/42 × 40 = 2400/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
84/80 = 84 × 21/80 × 21 = 1764/1680 - Add the two like fractions:
2400/1680 + 1764/1680 = 2400 + 1764/1680 = 4164/1680 - 4164/1680 simplified gives 347/140
- So, 60/42 + 84/80 = 347/140
In mixed form: 267/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+84/80