Add 63/30 and 81/42
1st number: 2 3/30, 2nd number: 1 39/42
63/30 + 81/42 is 141/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
63/30 = 63 × 7/30 × 7 = 441/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210 - Add the two like fractions:
441/210 + 405/210 = 441 + 405/210 = 846/210 - 846/210 simplified gives 141/35
- So, 63/30 + 81/42 = 141/35
In mixed form: 41/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/60+81/42 63/30+81/84 63/90+81/42