Add 15/54 and 10/90
15/54 + 10/90 is 7/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
15/54 = 15 × 5/54 × 5 = 75/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
10/90 = 10 × 3/90 × 3 = 30/270 - Add the two like fractions:
75/270 + 30/270 = 75 + 30/270 = 105/270 - 105/270 simplified gives 7/18
- So, 15/54 + 10/90 = 7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/54+10/90 15/54+20/90 45/54+10/90 15/54+30/90 75/54+10/90 15/54+50/90 15/54+70/90