Add 45/84 and 7/4
1st number: 45/84, 2nd number: 1 3/4
45/84 + 7/4 is 16/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
45/84 = 45 × 1/84 × 1 = 45/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
7/4 = 7 × 21/4 × 21 = 147/84 - Add the two like fractions:
45/84 + 147/84 = 45 + 147/84 = 192/84 - 192/84 simplified gives 16/7
- So, 45/84 + 7/4 = 16/7
In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+7/4 45/84+14/4 45/84+7/8 45/84+21/4 45/84+7/12 45/84+35/4 45/84+7/20 45/84+49/4 45/84+7/28