Subtract 7/45 from 42/24
1st number: 1 18/24, 2nd number: 7/45
42/24 - 7/45 is 287/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
42/24 = 42 × 15/24 × 15 = 630/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
7/45 = 7 × 8/45 × 8 = 56/360 - Subtract the two like fractions:
630/360 - 56/360 = 630 - 56/360 = 574/360 - After reducing the fraction, the answer is 287/180
- In mixed form: 1107/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24-7/45 42/24-14/45 42/48-7/45 42/24-7/90 42/24-21/45 42/72-7/45 42/24-35/45 42/24-49/45