Add 28/90 and 12/25
28/90 + 12/25 is 178/225.
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,
28/90 = 28 × 5/90 × 5 = 140/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
12/25 = 12 × 18/25 × 18 = 216/450 - Add the two like fractions:
140/450 + 216/450 = 140 + 216/450 = 356/450 - 356/450 simplified gives 178/225
- So, 28/90 + 12/25 = 178/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+12/25 28/90+24/25 28/90+12/50 84/90+12/25 28/90+36/25 28/90+12/75 28/90+60/25 28/90+84/25