Subtract 7/54 from 90/84
1st number: 1 6/84, 2nd number: 7/54
90/84 - 7/54 is 178/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
90/84 = 90 × 9/84 × 9 = 810/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
7/54 = 7 × 14/54 × 14 = 98/756 - Subtract the two like fractions:
810/756 - 98/756 = 810 - 98/756 = 712/756 - After reducing the fraction, the answer is 178/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84-14/54 90/84-21/54 90/84-35/54 90/84-49/54