Add 42/28 and 8/20
1st number: 1 14/28, 2nd number: 8/20
42/28 + 8/20 is 19/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
42/28 = 42 × 5/28 × 5 = 210/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Add the two like fractions:
210/140 + 56/140 = 210 + 56/140 = 266/140 - 266/140 simplified gives 19/10
- So, 42/28 + 8/20 = 19/10
In mixed form: 19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+8/20 42/28+16/20 42/56+8/20 42/28+8/40 42/28+24/20 42/84+8/20 42/28+8/60 42/28+40/20 42/28+56/20