Add 70/20 and 60/63
1st number: 3 10/20, 2nd number: 60/63
70/20 + 60/63 is 187/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
70/20 = 70 × 63/20 × 63 = 4410/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
60/63 = 60 × 20/63 × 20 = 1200/1260 - Add the two like fractions:
4410/1260 + 1200/1260 = 4410 + 1200/1260 = 5610/1260 - 5610/1260 simplified gives 187/42
- So, 70/20 + 60/63 = 187/42
In mixed form: 419/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+60/63 70/60+60/63