Subtract 7/35 from 18/20
18/20 - 7/35 is 7/10.
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,
7/35 = 7 × 4/35 × 4 = 28/140 - Subtract the two like fractions:
126/140 - 28/140 = 126 - 28/140 = 98/140 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-7/35 18/20-14/35 18/40-7/35 18/20-7/70 54/20-7/35 18/20-21/35 18/60-7/35 90/20-7/35 18/20-49/35