Subtract 3/63 from 12/70
12/70 - 3/63 is 13/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
12/70 = 12 × 9/70 × 9 = 108/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
3/63 = 3 × 10/63 × 10 = 30/630 - Subtract the two like fractions:
108/630 - 30/630 = 108 - 30/630 = 78/630 - After reducing the fraction, the answer is 13/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70-3/63 12/70-6/63 36/70-3/63 12/70-9/63 60/70-3/63 12/70-15/63 84/70-3/63 12/70-21/63