Add 63/80 and 5/45
63/80 + 5/45 is 647/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
63/80 = 63 × 9/80 × 9 = 567/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
5/45 = 5 × 16/45 × 16 = 80/720 - Add the two like fractions:
567/720 + 80/720 = 567 + 80/720 = 647/720 - So, 63/80 + 5/45 = 647/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/80+10/45 63/80+5/90 63/80+15/45 63/80+25/45 63/80+35/45