Subtract 42/8 from 9/70
1st number: 9/70, 2nd number: 5 2/8
9/70 - 42/8 is -717/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
9/70 = 9 × 4/70 × 4 = 36/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
42/8 = 42 × 35/8 × 35 = 1470/280 - Subtract the two like fractions:
36/280 - 1470/280 = 36 - 1470/280 = -1434/280 - After reducing the fraction, the answer is -717/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-42/8 9/70-84/8 9/70-42/16 27/70-42/8 9/70-42/24 45/70-42/8 9/70-42/40 63/70-42/8 9/70-42/56