Subtract 40/42 from 84/27
1st number: 3 3/27, 2nd number: 40/42
84/27 - 40/42 is 136/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
84/27 = 84 × 14/27 × 14 = 1176/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
40/42 = 40 × 9/42 × 9 = 360/378 - Subtract the two like fractions:
1176/378 - 360/378 = 1176 - 360/378 = 816/378 - After reducing the fraction, the answer is 136/63
- In mixed form: 210/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/27-80/42 84/54-40/42 84/27-40/84 84/81-40/42