Subtract 25/10 from 42/49
1st number: 42/49, 2nd number: 2 5/10
42/49 - 25/10 is -23/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
42/49 = 42 × 10/49 × 10 = 420/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
25/10 = 25 × 49/10 × 49 = 1225/490 - Subtract the two like fractions:
420/490 - 1225/490 = 420 - 1225/490 = -805/490 - After reducing the fraction, the answer is -23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/49-25/10 42/49-50/10 42/98-25/10 42/49-25/20 42/49-75/10 42/49-25/30 42/49-25/50 42/49-25/70