Add 63/45 and 90/27
1st number: 1 18/45, 2nd number: 3 9/27
63/45 + 90/27 is 71/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
63/45 = 63 × 3/45 × 3 = 189/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
90/27 = 90 × 5/27 × 5 = 450/135 - Add the two like fractions:
189/135 + 450/135 = 189 + 450/135 = 639/135 - 639/135 simplified gives 71/15
- So, 63/45 + 90/27 = 71/15
In mixed form: 411/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90+90/27 63/45+90/54 63/45+90/81