Subtract 10/42 from 16/70
16/70 - 10/42 is -1/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
16/70 = 16 × 3/70 × 3 = 48/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
10/42 = 10 × 5/42 × 5 = 50/210 - Subtract the two like fractions:
48/210 - 50/210 = 48 - 50/210 = -2/210 - After reducing the fraction, the answer is -1/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/70-10/42 16/70-20/42 16/70-10/84 48/70-10/42 16/70-30/42 80/70-10/42 16/70-50/42 16/70-70/42