Subtract 1/70 from 45/63
45/63 - 1/70 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
45/63 = 45 × 10/63 × 10 = 450/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
1/70 = 1 × 9/70 × 9 = 9/630 - Subtract the two like fractions:
450/630 - 9/630 = 450 - 9/630 = 441/630 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63-1/70 45/63-2/70 45/63-3/70 45/63-5/70 45/63-7/70