Subtract 90/35 from 1/42
1st number: 1/42, 2nd number: 2 20/35
1/42 - 90/35 is -107/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
1/42 = 1 × 5/42 × 5 = 5/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
90/35 = 90 × 6/35 × 6 = 540/210 - Subtract the two like fractions:
5/210 - 540/210 = 5 - 540/210 = -535/210 - After reducing the fraction, the answer is -107/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42-90/35 1/84-90/35 1/42-90/70 3/42-90/35 5/42-90/35 7/42-90/35