Add 42/10 and 75/8
1st number: 4 2/10, 2nd number: 9 3/8
42/10 + 75/8 is 543/40.
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,
75/8 = 75 × 5/8 × 5 = 375/40 - Add the two like fractions:
168/40 + 375/40 = 168 + 375/40 = 543/40 - So, 42/10 + 75/8 = 543/40
In mixed form: 1323/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+75/8 42/20+75/8 42/10+75/16 42/30+75/8 42/10+75/24 42/50+75/8 42/10+75/40 42/70+75/8 42/10+75/56