Subtract 10/80 from 16/42
16/42 - 10/80 is 43/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
16/42 = 16 × 40/42 × 40 = 640/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
10/80 = 10 × 21/80 × 21 = 210/1680 - Subtract the two like fractions:
640/1680 - 210/1680 = 640 - 210/1680 = 430/1680 - After reducing the fraction, the answer is 43/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42-10/80 16/42-20/80 16/84-10/80 48/42-10/80 16/42-30/80 80/42-10/80 16/42-50/80 16/42-70/80