Add 63/4 and 90/7
1st number: 15 3/4, 2nd number: 12 6/7
63/4 + 90/7 is 801/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
63/4 = 63 × 7/4 × 7 = 441/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
90/7 = 90 × 4/7 × 4 = 360/28 - Add the two like fractions:
441/28 + 360/28 = 441 + 360/28 = 801/28 - So, 63/4 + 90/7 = 801/28
In mixed form: 2817/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/8+90/7 63/4+90/14 63/12+90/7 63/4+90/21 63/20+90/7 63/4+90/35 63/28+90/7 63/4+90/49