Add 25/30 and 12/90
25/30 + 12/90 is 29/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
25/30 = 25 × 3/30 × 3 = 75/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
12/90 = 12 × 1/90 × 1 = 12/90 - Add the two like fractions:
75/90 + 12/90 = 75 + 12/90 = 87/90 - 87/90 simplified gives 29/30
- So, 25/30 + 12/90 = 29/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30+12/90 25/30+24/90 25/60+12/90 75/30+12/90 25/30+36/90 25/90+12/90 25/30+60/90 25/30+84/90