Add 42/10 and 28/8
1st number: 4 2/10, 2nd number: 3 4/8
42/10 + 28/8 is 77/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
42/10 = 42 × 4/10 × 4 = 168/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
28/8 = 28 × 5/8 × 5 = 140/40 - Add the two like fractions:
168/40 + 140/40 = 168 + 140/40 = 308/40 - 308/40 simplified gives 77/10
- So, 42/10 + 28/8 = 77/10
In mixed form: 77/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+28/8 42/10+56/8 42/20+28/8 42/10+28/16 42/10+84/8 42/30+28/8 42/10+28/24 42/50+28/8 42/10+28/40 42/70+28/8 42/10+28/56