Add 42/40 and 63/60
1st number: 1 2/40, 2nd number: 1 3/60
42/40 + 63/60 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
63/60 = 63 × 2/60 × 2 = 126/120 - Add the two like fractions:
126/120 + 126/120 = 126 + 126/120 = 252/120 - 252/120 simplified gives 21/10
- So, 42/40 + 63/60 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+63/60 42/80+63/60