Add 84/40 and 15/63
1st number: 2 4/40, 2nd number: 15/63
84/40 + 15/63 is 491/210.
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,
84/40 = 84 × 63/40 × 63 = 5292/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
15/63 = 15 × 40/63 × 40 = 600/2520 - Add the two like fractions:
5292/2520 + 600/2520 = 5292 + 600/2520 = 5892/2520 - 5892/2520 simplified gives 491/210
- So, 84/40 + 15/63 = 491/210
In mixed form: 271/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+30/63 84/80+15/63 84/40+45/63 84/40+75/63