Subtract 36/70 from 45/42
1st number: 1 3/42, 2nd number: 36/70
45/42 - 36/70 is 39/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
45/42 = 45 × 5/42 × 5 = 225/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
36/70 = 36 × 3/70 × 3 = 108/210 - Subtract the two like fractions:
225/210 - 108/210 = 225 - 108/210 = 117/210 - After reducing the fraction, the answer is 39/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-36/70 45/42-72/70 45/84-36/70