Add 42/70 and 63/24
1st number: 42/70, 2nd number: 2 15/24
42/70 + 63/24 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
42/70 = 42 × 12/70 × 12 = 504/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
63/24 = 63 × 35/24 × 35 = 2205/840 - Add the two like fractions:
504/840 + 2205/840 = 504 + 2205/840 = 2709/840 - 2709/840 simplified gives 129/40
- So, 42/70 + 63/24 = 129/40
In mixed form: 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+63/24 42/70+63/48 42/70+63/72