Add 42/10 and 25/84
1st number: 4 2/10, 2nd number: 25/84
42/10 + 25/84 is 1889/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
42/10 = 42 × 42/10 × 42 = 1764/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
25/84 = 25 × 5/84 × 5 = 125/420 - Add the two like fractions:
1764/420 + 125/420 = 1764 + 125/420 = 1889/420 - So, 42/10 + 25/84 = 1889/420
In mixed form: 4209/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+25/84 42/10+50/84 42/20+25/84 42/10+75/84 42/30+25/84 42/50+25/84 42/70+25/84