Add 18/40 and 63/75
18/40 + 63/75 is 129/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 40 × 15 = 600,
18/40 = 18 × 15/40 × 15 = 270/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
63/75 = 63 × 8/75 × 8 = 504/600 - Add the two like fractions:
270/600 + 504/600 = 270 + 504/600 = 774/600 - 774/600 simplified gives 129/100
- So, 18/40 + 63/75 = 129/100
In mixed form: 129/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+63/75 18/80+63/75 54/40+63/75 90/40+63/75