Add 63/72 and 45/40
1st number: 63/72, 2nd number: 1 5/40
63/72 + 45/40 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Add the two like fractions:
315/360 + 405/360 = 315 + 405/360 = 720/360 - 720/360 simplified gives 2/1
- So, 63/72 + 45/40 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/72+90/40 63/72+45/80