Add 75/45 and 20/54
1st number: 1 30/45, 2nd number: 20/54
75/45 + 20/54 is 55/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
75/45 = 75 × 6/45 × 6 = 450/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Add the two like fractions:
450/270 + 100/270 = 450 + 100/270 = 550/270 - 550/270 simplified gives 55/27
- So, 75/45 + 20/54 = 55/27
In mixed form: 21/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/45+40/54 75/90+20/54 75/45+60/54