Add 1/40 and 15/63
1/40 + 15/63 is 221/840.
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,
1/40 = 1 × 63/40 × 63 = 63/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
15/63 = 15 × 40/63 × 40 = 600/2520 - Add the two like fractions:
63/2520 + 600/2520 = 63 + 600/2520 = 663/2520 - 663/2520 simplified gives 221/840
- So, 1/40 + 15/63 = 221/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+15/63 1/40+30/63 1/80+15/63 3/40+15/63 1/40+45/63 5/40+15/63 1/40+75/63 7/40+15/63