Subtract 14/27 from 42/90
42/90 - 14/27 is -7/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
42/90 = 42 × 3/90 × 3 = 126/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
14/27 = 14 × 10/27 × 10 = 140/270 - Subtract the two like fractions:
126/270 - 140/270 = 126 - 140/270 = -14/270 - After reducing the fraction, the answer is -7/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90-14/27 42/90-28/27 42/90-14/54 42/90-42/27 42/90-14/81 42/90-70/27 42/90-98/27