Add 42/80 and 60/63
42/80 + 60/63 is 1241/840.
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,
42/80 = 42 × 63/80 × 63 = 2646/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
60/63 = 60 × 80/63 × 80 = 4800/5040 - Add the two like fractions:
2646/5040 + 4800/5040 = 2646 + 4800/5040 = 7446/5040 - 7446/5040 simplified gives 1241/840
- So, 42/80 + 60/63 = 1241/840
In mixed form: 1401/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+60/63