Add 42/80 and 28/10
1st number: 42/80, 2nd number: 2 8/10
42/80 + 28/10 is 133/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
28/10 = 28 × 8/10 × 8 = 224/80 - Add the two like fractions:
42/80 + 224/80 = 42 + 224/80 = 266/80 - 266/80 simplified gives 133/40
- So, 42/80 + 28/10 = 133/40
In mixed form: 313/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+28/10 42/80+56/10 42/80+28/20 42/80+84/10 42/80+28/30 42/80+28/50 42/80+28/70