Add 90/27 and 25/20
1st number: 3 9/27, 2nd number: 1 5/20
90/27 + 25/20 is 55/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
90/27 = 90 × 20/27 × 20 = 1800/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
25/20 = 25 × 27/20 × 27 = 675/540 - Add the two like fractions:
1800/540 + 675/540 = 1800 + 675/540 = 2475/540 - 2475/540 simplified gives 55/12
- So, 90/27 + 25/20 = 55/12
In mixed form: 47/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/27+50/20 90/54+25/20 90/27+25/40 90/27+75/20 90/81+25/20 90/27+25/60