Add 30/80 and 80/63
1st number: 30/80, 2nd number: 1 17/63
30/80 + 80/63 is 829/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 80 × 63 = 5040,
30/80 = 30 × 63/80 × 63 = 1890/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
80/63 = 80 × 80/63 × 80 = 6400/5040 - Add the two like fractions:
1890/5040 + 6400/5040 = 1890 + 6400/5040 = 8290/5040 - 8290/5040 simplified gives 829/504
- So, 30/80 + 80/63 = 829/504
In mixed form: 1325/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+80/63 90/80+80/63