Add 42/28 and 3/80
1st number: 1 14/28, 2nd number: 3/80
42/28 + 3/80 is 123/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
42/28 = 42 × 20/28 × 20 = 840/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
3/80 = 3 × 7/80 × 7 = 21/560 - Add the two like fractions:
840/560 + 21/560 = 840 + 21/560 = 861/560 - 861/560 simplified gives 123/80
- So, 42/28 + 3/80 = 123/80
In mixed form: 143/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+3/80 42/28+6/80 42/56+3/80 42/28+9/80 42/84+3/80 42/28+15/80 42/28+21/80