Add 18/40 and 40/63
18/40 + 40/63 is 1367/1260.
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,
18/40 = 18 × 63/40 × 63 = 1134/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
40/63 = 40 × 40/63 × 40 = 1600/2520 - Add the two like fractions:
1134/2520 + 1600/2520 = 1134 + 1600/2520 = 2734/2520 - 2734/2520 simplified gives 1367/1260
- So, 18/40 + 40/63 = 1367/1260
In mixed form: 1107/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+40/63 18/40+80/63 18/80+40/63 54/40+40/63 90/40+40/63