Subtract 10/45 from 72/4
1st number: 18 0/4, 2nd number: 10/45
72/4 - 10/45 is 160/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
72/4 = 72 × 45/4 × 45 = 3240/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
10/45 = 10 × 4/45 × 4 = 40/180 - Subtract the two like fractions:
3240/180 - 40/180 = 3240 - 40/180 = 3200/180 - After reducing the fraction, the answer is 160/9
- In mixed form: 177/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4-20/45 72/8-10/45 72/4-10/90 72/4-30/45 72/12-10/45 72/4-50/45 72/20-10/45 72/4-70/45 72/28-10/45