Subtract 45/10 from 42/63
1st number: 42/63, 2nd number: 4 5/10
42/63 - 45/10 is -23/6.
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,
42/63 = 42 × 10/63 × 10 = 420/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
45/10 = 45 × 63/10 × 63 = 2835/630 - Subtract the two like fractions:
420/630 - 2835/630 = 420 - 2835/630 = -2415/630 - After reducing the fraction, the answer is -23/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63-45/10 42/63-90/10 42/63-45/20 42/63-45/30 42/63-45/50 42/63-45/70