Subtract 63/70 from 90/10
1st number: 9 0/10, 2nd number: 63/70
90/10 - 63/70 is 81/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
90/10 = 90 × 7/10 × 7 = 630/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
63/70 = 63 × 1/70 × 1 = 63/70 - Subtract the two like fractions:
630/70 - 63/70 = 630 - 63/70 = 567/70 - After reducing the fraction, the answer is 81/10
- In mixed form: 81/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-63/70 90/30-63/70 90/50-63/70 90/70-63/70