Subtract 30/7 from 5/42
1st number: 5/42, 2nd number: 4 2/7
5/42 - 30/7 is -25/6.
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,
5/42 = 5 × 1/42 × 1 = 5/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
30/7 = 30 × 6/7 × 6 = 180/42 - Subtract the two like fractions:
5/42 - 180/42 = 5 - 180/42 = -175/42 - After reducing the fraction, the answer is -25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42-30/7 5/42-60/7 5/84-30/7 5/42-30/14 15/42-30/7 5/42-90/7 5/42-30/21 25/42-30/7 5/42-30/35 35/42-30/7 5/42-30/49