Subtract 35/45 from 24/42
24/42 - 35/45 is -13/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
24/42 = 24 × 15/42 × 15 = 360/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
35/45 = 35 × 14/45 × 14 = 490/630 - Subtract the two like fractions:
360/630 - 490/630 = 360 - 490/630 = -130/630 - After reducing the fraction, the answer is -13/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-35/45 24/42-70/45 24/84-35/45 24/42-35/90 72/42-35/45