Subtract 16/7 from 70/90
1st number: 70/90, 2nd number: 2 2/7
70/90 - 16/7 is -95/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
16/7 = 16 × 90/7 × 90 = 1440/630 - Subtract the two like fractions:
490/630 - 1440/630 = 490 - 1440/630 = -950/630 - After reducing the fraction, the answer is -95/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90-32/7 70/90-16/14 70/90-48/7 70/90-16/21 70/90-80/7 70/90-16/35 70/90-16/49