Subtract 90/72 from 14/8
1st number: 1 6/8, 2nd number: 1 18/72
14/8 - 90/72 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
14/8 = 14 × 9/8 × 9 = 126/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Subtract the two like fractions:
126/72 - 90/72 = 126 - 90/72 = 36/72 - After reducing the fraction, the answer is 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/8-90/72 14/16-90/72 42/8-90/72 14/24-90/72 70/8-90/72 14/40-90/72 98/8-90/72 14/56-90/72