Subtract 90/6 from 16/42
1st number: 16/42, 2nd number: 15 0/6
16/42 - 90/6 is -307/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
16/42 = 16 × 1/42 × 1 = 16/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
90/6 = 90 × 7/6 × 7 = 630/42 - Subtract the two like fractions:
16/42 - 630/42 = 16 - 630/42 = -614/42 - After reducing the fraction, the answer is -307/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42-90/6 16/84-90/6 16/42-90/12 48/42-90/6 16/42-90/18 80/42-90/6 16/42-90/30 16/42-90/42