Subtract 8/35 from 18/20
18/20 - 8/35 is 47/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
8/35 = 8 × 4/35 × 4 = 32/140 - Subtract the two like fractions:
126/140 - 32/140 = 126 - 32/140 = 94/140 - After reducing the fraction, the answer is 47/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-8/35 18/20-16/35 18/40-8/35 18/20-8/70 54/20-8/35 18/20-24/35 18/60-8/35 90/20-8/35 18/20-40/35 18/20-56/35