Subtract 90/9 from 16/7
1st number: 2 2/7, 2nd number: 10 0/9
16/7 - 90/9 is -54/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
16/7 = 16 × 9/7 × 9 = 144/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
90/9 = 90 × 7/9 × 7 = 630/63 - Subtract the two like fractions:
144/63 - 630/63 = 144 - 630/63 = -486/63 - After reducing the fraction, the answer is -54/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/7-90/9 16/14-90/9 16/7-90/18 48/7-90/9 16/21-90/9 16/7-90/27 80/7-90/9 16/35-90/9 16/7-90/45 16/49-90/9 16/7-90/63