Subtract 90/42 from 16/10
1st number: 1 6/10, 2nd number: 2 6/42
16/10 - 90/42 is -19/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
16/10 = 16 × 21/10 × 21 = 336/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Subtract the two like fractions:
336/210 - 450/210 = 336 - 450/210 = -114/210 - After reducing the fraction, the answer is -19/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/10-90/42 16/20-90/42 16/10-90/84 48/10-90/42 16/30-90/42 80/10-90/42 16/50-90/42 16/70-90/42