Subtract 30/42 from 70/9
1st number: 7 7/9, 2nd number: 30/42
70/9 - 30/42 is 445/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 9 × 14 = 126,
70/9 = 70 × 14/9 × 14 = 980/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
30/42 = 30 × 3/42 × 3 = 90/126 - Subtract the two like fractions:
980/126 - 90/126 = 980 - 90/126 = 890/126 - After reducing the fraction, the answer is 445/63
- In mixed form: 74/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/9-60/42 70/18-30/42 70/9-30/84 70/9-90/42 70/27-30/42 70/45-30/42 70/63-30/42