Add 42/35 and 63/40
1st number: 1 7/35, 2nd number: 1 23/40
42/35 + 63/40 is 111/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 35 × 8 = 280,
42/35 = 42 × 8/35 × 8 = 336/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
63/40 = 63 × 7/40 × 7 = 441/280 - Add the two like fractions:
336/280 + 441/280 = 336 + 441/280 = 777/280 - 777/280 simplified gives 111/40
- So, 42/35 + 63/40 = 111/40
In mixed form: 231/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/35+63/40 42/70+63/40 42/35+63/80