Subtract 30/40 from 42/3
1st number: 14 0/3, 2nd number: 30/40
42/3 - 30/40 is 53/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 3 × 40 = 120,
42/3 = 42 × 40/3 × 40 = 1680/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120 - Subtract the two like fractions:
1680/120 - 90/120 = 1680 - 90/120 = 1590/120 - After reducing the fraction, the answer is 53/4
- In mixed form: 131/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/3-30/40 42/3-60/40 42/6-30/40 42/3-30/80 42/3-90/40 42/9-30/40 42/15-30/40 42/21-30/40