Subtract 1/4 from 70/42
1st number: 1 28/42, 2nd number: 1/4
70/42 - 1/4 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
70/42 = 70 × 2/42 × 2 = 140/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
1/4 = 1 × 21/4 × 21 = 21/84 - Subtract the two like fractions:
140/84 - 21/84 = 140 - 21/84 = 119/84 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-2/4 70/84-1/4 70/42-1/8 70/42-3/4 70/42-1/12 70/42-5/4 70/42-1/20 70/42-7/4 70/42-1/28