Add 25/35 and 21/45
25/35 + 21/45 is 124/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
25/35 = 25 × 9/35 × 9 = 225/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Add the two like fractions:
225/315 + 147/315 = 225 + 147/315 = 372/315 - 372/315 simplified gives 124/105
- So, 25/35 + 21/45 = 124/105
In mixed form: 119/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/35+21/45 25/35+42/45 25/70+21/45 25/35+21/90 75/35+21/45 25/35+63/45