Subtract 32/42 from 9/70
9/70 - 32/42 is -19/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
9/70 = 9 × 3/70 × 3 = 27/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
32/42 = 32 × 5/42 × 5 = 160/210 - Subtract the two like fractions:
27/210 - 160/210 = 27 - 160/210 = -133/210 - After reducing the fraction, the answer is -19/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-32/42 9/70-64/42 9/70-32/84 27/70-32/42 9/70-96/42 45/70-32/42 63/70-32/42