Add 15/5 and 40/70
1st number: 3 0/5, 2nd number: 40/70
15/5 + 40/70 is 25/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
15/5 = 15 × 14/5 × 14 = 210/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
40/70 = 40 × 1/70 × 1 = 40/70 - Add the two like fractions:
210/70 + 40/70 = 210 + 40/70 = 250/70 - 250/70 simplified gives 25/7
- So, 15/5 + 40/70 = 25/7
In mixed form: 34/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5+40/70 15/5+80/70 15/10+40/70 45/5+40/70 75/5+40/70 15/25+40/70 15/35+40/70