Add 42/16 and 75/20
1st number: 2 10/16, 2nd number: 3 15/20
42/16 + 75/20 is 51/8.
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,
75/20 = 75 × 4/20 × 4 = 300/80 - Add the two like fractions:
210/80 + 300/80 = 210 + 300/80 = 510/80 - 510/80 simplified gives 51/8
- So, 42/16 + 75/20 = 51/8
In mixed form: 63/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+75/20 42/32+75/20 42/16+75/40 42/48+75/20 42/16+75/60 42/80+75/20