Add 63/18 and 90/7
1st number: 3 9/18, 2nd number: 12 6/7
63/18 + 90/7 is 229/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
63/18 = 63 × 7/18 × 7 = 441/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
90/7 = 90 × 18/7 × 18 = 1620/126 - Add the two like fractions:
441/126 + 1620/126 = 441 + 1620/126 = 2061/126 - 2061/126 simplified gives 229/14
- So, 63/18 + 90/7 = 229/14
In mixed form: 165/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/36+90/7 63/18+90/14 63/54+90/7 63/18+90/21 63/90+90/7 63/18+90/35 63/18+90/49