Subtract 24/7 from 40/90
1st number: 40/90, 2nd number: 3 3/7
40/90 - 24/7 is -188/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
40/90 = 40 × 7/90 × 7 = 280/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
24/7 = 24 × 90/7 × 90 = 2160/630 - Subtract the two like fractions:
280/630 - 2160/630 = 280 - 2160/630 = -1880/630 - After reducing the fraction, the answer is -188/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90-24/7 40/90-48/7 40/90-24/14 40/90-72/7 40/90-24/21 40/90-24/35 40/90-24/49