Add 70/40 and 30/5
1st number: 1 30/40, 2nd number: 6 0/5
70/40 + 30/5 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
70/40 = 70 × 1/40 × 1 = 70/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
30/5 = 30 × 8/5 × 8 = 240/40 - Add the two like fractions:
70/40 + 240/40 = 70 + 240/40 = 310/40 - 310/40 simplified gives 31/4
- So, 70/40 + 30/5 = 31/4
In mixed form: 73/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+60/5 70/80+30/5 70/40+30/10 70/40+90/5 70/40+30/15 70/40+30/25 70/40+30/35