Subtract 18/27 from 70/84
70/84 - 18/27 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
70/84 = 70 × 9/84 × 9 = 630/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
18/27 = 18 × 28/27 × 28 = 504/756 - Subtract the two like fractions:
630/756 - 504/756 = 630 - 504/756 = 126/756 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84-36/27 70/84-18/54 70/84-54/27 70/84-18/81 70/84-90/27