Subtract 70/9 from 42/4
1st number: 10 2/4, 2nd number: 7 7/9
42/4 - 70/9 is 49/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
42/4 = 42 × 9/4 × 9 = 378/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
70/9 = 70 × 4/9 × 4 = 280/36 - Subtract the two like fractions:
378/36 - 280/36 = 378 - 280/36 = 98/36 - After reducing the fraction, the answer is 49/18
- In mixed form: 213/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-70/9 42/8-70/9 42/4-70/18 42/12-70/9 42/4-70/27 42/20-70/9 42/4-70/45 42/28-70/9 42/4-70/63