Add 42/16 and 10/20
1st number: 2 10/16, 2nd number: 10/20
42/16 + 10/20 is 25/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
10/20 = 10 × 4/20 × 4 = 40/80 - Add the two like fractions:
210/80 + 40/80 = 210 + 40/80 = 250/80 - 250/80 simplified gives 25/8
- So, 42/16 + 10/20 = 25/8
In mixed form: 31/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+10/20 42/32+10/20 42/16+10/40 42/16+30/20 42/48+10/20 42/16+10/60 42/16+50/20 42/80+10/20 42/16+70/20