Add 15/2 and 12/84
1st number: 7 1/2, 2nd number: 12/84
15/2 + 12/84 is 107/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 2 × 42 = 84,
15/2 = 15 × 42/2 × 42 = 630/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
12/84 = 12 × 1/84 × 1 = 12/84 - Add the two like fractions:
630/84 + 12/84 = 630 + 12/84 = 642/84 - 642/84 simplified gives 107/14
- So, 15/2 + 12/84 = 107/14
In mixed form: 79/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+12/84 15/2+24/84 15/4+12/84 45/2+12/84 15/2+36/84 15/6+12/84 75/2+12/84 15/2+60/84 15/10+12/84 15/14+12/84