Subtract 90/63 from 32/30
1st number: 1 2/30, 2nd number: 1 27/63
32/30 - 90/63 is -38/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
32/30 = 32 × 21/30 × 21 = 672/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630 - Subtract the two like fractions:
672/630 - 900/630 = 672 - 900/630 = -228/630 - After reducing the fraction, the answer is -38/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/30-90/63 32/60-90/63 96/30-90/63 32/90-90/63