Add 54/63 and 70/20
1st number: 54/63, 2nd number: 3 10/20
54/63 + 70/20 is 61/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
54/63 = 54 × 20/63 × 20 = 1080/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
70/20 = 70 × 63/20 × 63 = 4410/1260 - Add the two like fractions:
1080/1260 + 4410/1260 = 1080 + 4410/1260 = 5490/1260 - 5490/1260 simplified gives 61/14
- So, 54/63 + 70/20 = 61/14
In mixed form: 45/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/63+70/40 54/63+70/60