Add 63/15 and 90/7
1st number: 4 3/15, 2nd number: 12 6/7
63/15 + 90/7 is 597/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
63/15 = 63 × 7/15 × 7 = 441/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
90/7 = 90 × 15/7 × 15 = 1350/105 - Add the two like fractions:
441/105 + 1350/105 = 441 + 1350/105 = 1791/105 - 1791/105 simplified gives 597/35
- So, 63/15 + 90/7 = 597/35
In mixed form: 172/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/30+90/7 63/15+90/14 63/45+90/7 63/15+90/21 63/75+90/7 63/15+90/35 63/15+90/49