Subtract 9/35 from 42/30
1st number: 1 12/30, 2nd number: 9/35
42/30 - 9/35 is 8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
9/35 = 9 × 6/35 × 6 = 54/210 - Subtract the two like fractions:
294/210 - 54/210 = 294 - 54/210 = 240/210 - After reducing the fraction, the answer is 8/7
- In mixed form: 11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-9/35 42/30-18/35 42/60-9/35 42/30-9/70 42/30-27/35 42/90-9/35 42/30-45/35 42/30-63/35