Subtract 42/70 from 9/25
9/25 - 42/70 is -6/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 25 × 14 = 350,
9/25 = 9 × 14/25 × 14 = 126/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
42/70 = 42 × 5/70 × 5 = 210/350 - Subtract the two like fractions:
126/350 - 210/350 = 126 - 210/350 = -84/350 - After reducing the fraction, the answer is -6/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/25-42/70 9/25-84/70 9/50-42/70 27/25-42/70 9/75-42/70 45/25-42/70 63/25-42/70