Add 45/84 and 72/36
1st number: 45/84, 2nd number: 2 0/36
45/84 + 72/36 is 71/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
45/84 = 45 × 3/84 × 3 = 135/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
72/36 = 72 × 7/36 × 7 = 504/252 - Add the two like fractions:
135/252 + 504/252 = 135 + 504/252 = 639/252 - 639/252 simplified gives 71/28
- So, 45/84 + 72/36 = 71/28
In mixed form: 215/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+72/36