Subtract 49/30 from 18/63
1st number: 18/63, 2nd number: 1 19/30
18/63 - 49/30 is -283/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
18/63 = 18 × 10/63 × 10 = 180/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
49/30 = 49 × 21/30 × 21 = 1029/630 - Subtract the two like fractions:
180/630 - 1029/630 = 180 - 1029/630 = -849/630 - After reducing the fraction, the answer is -283/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63-49/30 18/63-98/30 18/63-49/60 54/63-49/30 18/63-49/90 90/63-49/30