Add 18/40 and 63/35
1st number: 18/40, 2nd number: 1 28/35
18/40 + 63/35 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
63/35 = 63 × 8/35 × 8 = 504/280 - Add the two like fractions:
126/280 + 504/280 = 126 + 504/280 = 630/280 - 630/280 simplified gives 9/4
- So, 18/40 + 63/35 = 9/4
In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+63/35 18/80+63/35 18/40+63/70 54/40+63/35 90/40+63/35