Subtract 70/7 from 45/9
1st number: 5 0/9, 2nd number: 10 0/7
45/9 - 70/7 is -5/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
45/9 = 45 × 7/9 × 7 = 315/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
70/7 = 70 × 9/7 × 9 = 630/63 - Subtract the two like fractions:
315/63 - 630/63 = 315 - 630/63 = -315/63 - After reducing the fraction, the answer is -5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9-70/7 45/18-70/7 45/9-70/14 45/27-70/7 45/9-70/21 45/9-70/35 45/63-70/7 45/9-70/49