Add 18/90 and 15/50
18/90 + 15/50 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
18/90 = 18 × 5/90 × 5 = 90/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
15/50 = 15 × 9/50 × 9 = 135/450 - Add the two like fractions:
90/450 + 135/450 = 90 + 135/450 = 225/450 - 225/450 simplified gives 1/2
- So, 18/90 + 15/50 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90+15/50 18/90+30/50 54/90+15/50 18/90+45/50 18/90+75/50