Add 27/45 and 12/7
1st number: 27/45, 2nd number: 1 5/7
27/45 + 12/7 is 81/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
27/45 = 27 × 7/45 × 7 = 189/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
12/7 = 12 × 45/7 × 45 = 540/315 - Add the two like fractions:
189/315 + 540/315 = 189 + 540/315 = 729/315 - 729/315 simplified gives 81/35
- So, 27/45 + 12/7 = 81/35
In mixed form: 211/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45+12/7 27/45+24/7 27/90+12/7 27/45+12/14 81/45+12/7 27/45+36/7 27/45+12/21 27/45+60/7 27/45+12/35 27/45+84/7 27/45+12/49