Subtract 30/10 from 72/63
1st number: 1 9/63, 2nd number: 3 0/10
72/63 - 30/10 is -13/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 10 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
72/63 = 72 × 10/63 × 10 = 720/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
30/10 = 30 × 63/10 × 63 = 1890/630 - Subtract the two like fractions:
720/630 - 1890/630 = 720 - 1890/630 = -1170/630 - After reducing the fraction, the answer is -13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/63-60/10 72/63-30/20 72/63-90/10 72/63-30/50 72/63-30/70