Subtract 30/7 from 35/42
1st number: 35/42, 2nd number: 4 2/7
35/42 - 30/7 is -145/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
35/42 = 35 × 1/42 × 1 = 35/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
30/7 = 30 × 6/7 × 6 = 180/42 - Subtract the two like fractions:
35/42 - 180/42 = 35 - 180/42 = -145/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-30/7 35/42-60/7 35/84-30/7 35/42-30/14 35/42-90/7 35/42-30/21 35/42-30/35 35/42-30/49