Add 9/40 and 84/63
1st number: 9/40, 2nd number: 1 21/63
9/40 + 84/63 is 187/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
9/40 = 9 × 63/40 × 63 = 567/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
84/63 = 84 × 40/63 × 40 = 3360/2520 - Add the two like fractions:
567/2520 + 3360/2520 = 567 + 3360/2520 = 3927/2520 - 3927/2520 simplified gives 187/120
- So, 9/40 + 84/63 = 187/120
In mixed form: 167/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+84/63 9/80+84/63 27/40+84/63 45/40+84/63 63/40+84/63