Add 30/4 and 8/40
1st number: 7 2/4, 2nd number: 8/40
30/4 + 8/40 is 77/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
30/4 = 30 × 10/4 × 10 = 300/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
8/40 = 8 × 1/40 × 1 = 8/40 - Add the two like fractions:
300/40 + 8/40 = 300 + 8/40 = 308/40 - 308/40 simplified gives 77/10
- So, 30/4 + 8/40 = 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: 60/4+8/40 30/4+16/40 30/8+8/40 30/4+8/80 90/4+8/40 30/4+24/40 30/12+8/40 30/20+8/40 30/4+56/40 30/28+8/40