Add 25/75 and 18/63
25/75 + 18/63 is 13/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 75 × 21 = 1575,
25/75 = 25 × 21/75 × 21 = 525/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
18/63 = 18 × 25/63 × 25 = 450/1575 - Add the two like fractions:
525/1575 + 450/1575 = 525 + 450/1575 = 975/1575 - 975/1575 simplified gives 13/21
- So, 25/75 + 18/63 = 13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/75+18/63 25/75+36/63 25/75+54/63 25/75+90/63