Subtract 81/49 from 60/70
1st number: 60/70, 2nd number: 1 32/49
60/70 - 81/49 is -39/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
60/70 = 60 × 7/70 × 7 = 420/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
81/49 = 81 × 10/49 × 10 = 810/490 - Subtract the two like fractions:
420/490 - 810/490 = 420 - 810/490 = -390/490 - After reducing the fraction, the answer is -39/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-81/98