Add 18/84 and 7/60
18/84 + 7/60 is 139/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
7/60 = 7 × 7/60 × 7 = 49/420 - Add the two like fractions:
90/420 + 49/420 = 90 + 49/420 = 139/420 - So, 18/84 + 7/60 = 139/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+7/60 18/84+14/60 54/84+7/60 18/84+21/60 90/84+7/60 18/84+35/60 18/84+49/60