Add 12/21 and 25/60
12/21 + 25/60 is 83/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
12/21 = 12 × 20/21 × 20 = 240/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
25/60 = 25 × 7/60 × 7 = 175/420 - Add the two like fractions:
240/420 + 175/420 = 240 + 175/420 = 415/420 - 415/420 simplified gives 83/84
- So, 12/21 + 25/60 = 83/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+25/60 12/21+50/60 12/42+25/60 36/21+25/60 12/21+75/60 12/63+25/60 60/21+25/60 84/21+25/60