Add 45/18 and 90/25
1st number: 2 9/18, 2nd number: 3 15/25
45/18 + 90/25 is 61/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
45/18 = 45 × 25/18 × 25 = 1125/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
90/25 = 90 × 18/25 × 18 = 1620/450 - Add the two like fractions:
1125/450 + 1620/450 = 1125 + 1620/450 = 2745/450 - 2745/450 simplified gives 61/10
- So, 45/18 + 90/25 = 61/10
In mixed form: 61/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+90/25 45/36+90/25 45/18+90/50 45/54+90/25 45/18+90/75 45/90+90/25