Add 25/40 and 63/84
25/40 + 63/84 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
25/40 = 25 × 21/40 × 21 = 525/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
63/84 = 63 × 10/84 × 10 = 630/840 - Add the two like fractions:
525/840 + 630/840 = 525 + 630/840 = 1155/840 - 1155/840 simplified gives 11/8
- So, 25/40 + 63/84 = 11/8
In mixed form: 13/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+63/84 25/80+63/84 75/40+63/84