Subtract 30/6 from 40/45
1st number: 40/45, 2nd number: 5 0/6
40/45 - 30/6 is -37/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
40/45 = 40 × 2/45 × 2 = 80/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
30/6 = 30 × 15/6 × 15 = 450/90 - Subtract the two like fractions:
80/90 - 450/90 = 80 - 450/90 = -370/90 - After reducing the fraction, the answer is -37/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/45-30/6 40/45-60/6 40/90-30/6 40/45-30/12 40/45-90/6 40/45-30/18 40/45-30/42