Add 42/45 and 25/63
42/45 + 25/63 is 419/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
42/45 = 42 × 7/45 × 7 = 294/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
25/63 = 25 × 5/63 × 5 = 125/315 - Add the two like fractions:
294/315 + 125/315 = 294 + 125/315 = 419/315 - So, 42/45 + 25/63 = 419/315
In mixed form: 1104/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+25/63 42/45+50/63 42/90+25/63 42/45+75/63