Subtract 12/20 from 16/70
16/70 - 12/20 is -13/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
16/70 = 16 × 2/70 × 2 = 32/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Subtract the two like fractions:
32/140 - 84/140 = 32 - 84/140 = -52/140 - After reducing the fraction, the answer is -13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/70-12/20 16/70-24/20 16/70-12/40 48/70-12/20 16/70-36/20 16/70-12/60 80/70-12/20 16/70-60/20 16/70-84/20