Add 54/36 and 42/70
1st number: 1 18/36, 2nd number: 42/70
54/36 + 42/70 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
54/36 = 54 × 35/36 × 35 = 1890/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
42/70 = 42 × 18/70 × 18 = 756/1260 - Add the two like fractions:
1890/1260 + 756/1260 = 1890 + 756/1260 = 2646/1260 - 2646/1260 simplified gives 21/10
- So, 54/36 + 42/70 = 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: 54/36+84/70 54/72+42/70