Add 60/72 and 45/63
60/72 + 45/63 is 65/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
60/72 = 60 × 7/72 × 7 = 420/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
45/63 = 45 × 8/63 × 8 = 360/504 - Add the two like fractions:
420/504 + 360/504 = 420 + 360/504 = 780/504 - 780/504 simplified gives 65/42
- So, 60/72 + 45/63 = 65/42
In mixed form: 123/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+90/63