Add 15/2 and 5/42
1st number: 7 1/2, 2nd number: 5/42
15/2 + 5/42 is 160/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
15/2 = 15 × 21/2 × 21 = 315/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
5/42 = 5 × 1/42 × 1 = 5/42 - Add the two like fractions:
315/42 + 5/42 = 315 + 5/42 = 320/42 - 320/42 simplified gives 160/21
- So, 15/2 + 5/42 = 160/21
In mixed form: 713/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+5/42 15/2+10/42 15/4+5/42 15/2+5/84 45/2+5/42 15/2+15/42 15/6+5/42 75/2+5/42 15/2+25/42 15/10+5/42 15/2+35/42 15/14+5/42