Add 7/84 and 90/5
1st number: 7/84, 2nd number: 18 0/5
7/84 + 90/5 is 217/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
90/5 = 90 × 84/5 × 84 = 7560/420 - Add the two like fractions:
35/420 + 7560/420 = 35 + 7560/420 = 7595/420 - 7595/420 simplified gives 217/12
- So, 7/84 + 90/5 = 217/12
In mixed form: 181/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84+90/5 7/84+90/10 21/84+90/5 7/84+90/15 35/84+90/5 7/84+90/25 49/84+90/5 7/84+90/35