Add 48/84 and 20/40
48/84 + 20/40 is 15/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
48/84 = 48 × 10/84 × 10 = 480/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
20/40 = 20 × 21/40 × 21 = 420/840 - Add the two like fractions:
480/840 + 420/840 = 480 + 420/840 = 900/840 - 900/840 simplified gives 15/14
- So, 48/84 + 20/40 = 15/14
In mixed form: 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/84+20/40 48/84+20/80 48/84+60/40