Add 63/90 and 90/12
1st number: 63/90, 2nd number: 7 6/12
63/90 + 90/12 is 41/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
63/90 = 63 × 2/90 × 2 = 126/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
90/12 = 90 × 15/12 × 15 = 1350/180 - Add the two like fractions:
126/180 + 1350/180 = 126 + 1350/180 = 1476/180 - 1476/180 simplified gives 41/5
- So, 63/90 + 90/12 = 41/5
In mixed form: 81/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90+90/24 63/90+90/36 63/90+90/60 63/90+90/84