Subtract 36/30 from 7/42
1st number: 7/42, 2nd number: 1 6/30
7/42 - 36/30 is -31/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
36/30 = 36 × 7/30 × 7 = 252/210 - Subtract the two like fractions:
35/210 - 252/210 = 35 - 252/210 = -217/210 - After reducing the fraction, the answer is -31/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-36/30 7/42-72/30 7/84-36/30 7/42-36/60 21/42-36/30 7/42-36/90 35/42-36/30 49/42-36/30