Add 42/5 and 12/28
1st number: 8 2/5, 2nd number: 12/28
42/5 + 12/28 is 309/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
42/5 = 42 × 28/5 × 28 = 1176/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Add the two like fractions:
1176/140 + 60/140 = 1176 + 60/140 = 1236/140 - 1236/140 simplified gives 309/35
- So, 42/5 + 12/28 = 309/35
In mixed form: 829/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+12/28 42/5+24/28 42/10+12/28 42/5+12/56 42/5+36/28 42/15+12/28 42/5+12/84 42/5+60/28 42/25+12/28 42/5+84/28 42/35+12/28