Subtract 28/16 from 40/70
1st number: 40/70, 2nd number: 1 12/16
40/70 - 28/16 is -33/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
40/70 = 40 × 8/70 × 8 = 320/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
28/16 = 28 × 35/16 × 35 = 980/560 - Subtract the two like fractions:
320/560 - 980/560 = 320 - 980/560 = -660/560 - After reducing the fraction, the answer is -33/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-28/16 40/70-56/16 40/70-28/32 40/70-84/16 40/70-28/48 40/70-28/80