Subtract 20/35 from 70/45
1st number: 1 25/45, 2nd number: 20/35
70/45 - 20/35 is 62/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 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 35 × 9 = 315,
20/35 = 20 × 9/35 × 9 = 180/315 - Subtract the two like fractions:
490/315 - 180/315 = 490 - 180/315 = 310/315 - After reducing the fraction, the answer is 62/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-40/35 70/90-20/35 70/45-20/70 70/45-60/35