Subtract 16/70 from 64/90
64/90 - 16/70 is 152/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
64/90 = 64 × 7/90 × 7 = 448/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
16/70 = 16 × 9/70 × 9 = 144/630 - Subtract the two like fractions:
448/630 - 144/630 = 448 - 144/630 = 304/630 - After reducing the fraction, the answer is 152/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/90-32/70 64/90-48/70 64/90-80/70