Add 18/90 and 16/25
18/90 + 16/25 is 21/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 25 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 25 × 18 = 450,
16/25 = 16 × 18/25 × 18 = 288/450 - Add the two like fractions:
90/450 + 288/450 = 90 + 288/450 = 378/450 - 378/450 simplified gives 21/25
- So, 18/90 + 16/25 = 21/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90+16/25 18/90+32/25 18/90+16/50 54/90+16/25 18/90+48/25 18/90+16/75 18/90+80/25