Subtract 1/7 from 70/45
1st number: 1 25/45, 2nd number: 1/7
70/45 - 1/7 is 89/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
1/7 = 1 × 45/7 × 45 = 45/315 - Subtract the two like fractions:
490/315 - 45/315 = 490 - 45/315 = 445/315 - After reducing the fraction, the answer is 89/63
- In mixed form: 126/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-2/7 70/90-1/7 70/45-1/14 70/45-3/7 70/45-1/21 70/45-5/7 70/45-1/35 70/45-1/49