Add 84/63 and 25/40
1st number: 1 21/63, 2nd number: 25/40
84/63 + 25/40 is 47/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
84/63 = 84 × 40/63 × 40 = 3360/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
25/40 = 25 × 63/40 × 63 = 1575/2520 - Add the two like fractions:
3360/2520 + 1575/2520 = 3360 + 1575/2520 = 4935/2520 - 4935/2520 simplified gives 47/24
- So, 84/63 + 25/40 = 47/24
In mixed form: 123/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+50/40 84/63+25/80 84/63+75/40