Add 42/63 and 54/8
1st number: 42/63, 2nd number: 6 6/8
42/63 + 54/8 is 89/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
42/63 = 42 × 8/63 × 8 = 336/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
54/8 = 54 × 63/8 × 63 = 3402/504 - Add the two like fractions:
336/504 + 3402/504 = 336 + 3402/504 = 3738/504 - 3738/504 simplified gives 89/12
- So, 42/63 + 54/8 = 89/12
In mixed form: 75/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+54/8 42/63+54/16 42/63+54/24 42/63+54/40 42/63+54/56