Add 80/75 and 84/63
1st number: 1 5/75, 2nd number: 1 21/63
80/75 + 84/63 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 75 × 21 = 1575,
80/75 = 80 × 21/75 × 21 = 1680/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
84/63 = 84 × 25/63 × 25 = 2100/1575 - Add the two like fractions:
1680/1575 + 2100/1575 = 1680 + 2100/1575 = 3780/1575 - 3780/1575 simplified gives 12/5
- So, 80/75 + 84/63 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: