Subtract 98/70 from 7/30
1st number: 7/30, 2nd number: 1 28/70
7/30 - 98/70 is -7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
98/70 = 98 × 3/70 × 3 = 294/210 - Subtract the two like fractions:
49/210 - 294/210 = 49 - 294/210 = -245/210 - After reducing the fraction, the answer is -7/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30-98/70 7/60-98/70 21/30-98/70 7/90-98/70 35/30-98/70 49/30-98/70