Subtract 70/45 from 72/7
1st number: 10 2/7, 2nd number: 1 25/45
72/7 - 70/45 is 550/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
72/7 = 72 × 45/7 × 45 = 3240/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Subtract the two like fractions:
3240/315 - 490/315 = 3240 - 490/315 = 2750/315 - After reducing the fraction, the answer is 550/63
- In mixed form: 846/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/14-70/45 72/7-70/90 72/21-70/45 72/35-70/45 72/49-70/45