Subtract 98/30 from 49/42
1st number: 1 7/42, 2nd number: 3 8/30
49/42 - 98/30 is -21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
49/42 = 49 × 5/42 × 5 = 245/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Subtract the two like fractions:
245/210 - 686/210 = 245 - 686/210 = -441/210 - After reducing the fraction, the answer is -21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42-98/30 49/84-98/30 49/42-98/60 49/42-98/90