Add 45/12 and 75/84
1st number: 3 9/12, 2nd number: 75/84
45/12 + 75/84 is 65/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
75/84 = 75 × 1/84 × 1 = 75/84 - Add the two like fractions:
315/84 + 75/84 = 315 + 75/84 = 390/84 - 390/84 simplified gives 65/14
- So, 45/12 + 75/84 = 65/14
In mixed form: 49/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+75/84 45/24+75/84 45/36+75/84 45/60+75/84 45/84+75/84