Add 63/72 and 80/90
63/72 + 80/90 is 127/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 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 90 × 4 = 360,
80/90 = 80 × 4/90 × 4 = 320/360 - Add the two like fractions:
315/360 + 320/360 = 315 + 320/360 = 635/360 - 635/360 simplified gives 127/72
- So, 63/72 + 80/90 = 127/72
In mixed form: 155/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: