Subtract 4/18 from 63/70
63/70 - 4/18 is 61/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
63/70 = 63 × 9/70 × 9 = 567/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
4/18 = 4 × 35/18 × 35 = 140/630 - Subtract the two like fractions:
567/630 - 140/630 = 567 - 140/630 = 427/630 - After reducing the fraction, the answer is 61/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70-8/18 63/70-4/36 63/70-12/18 63/70-4/54 63/70-20/18 63/70-4/90 63/70-28/18