Subtract 7/30 from 42/27
1st number: 1 15/27, 2nd number: 7/30
42/27 - 7/30 is 119/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
7/30 = 7 × 9/30 × 9 = 63/270 - Subtract the two like fractions:
420/270 - 63/270 = 420 - 63/270 = 357/270 - After reducing the fraction, the answer is 119/90
- In mixed form: 129/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/27-7/30 42/27-14/30 42/54-7/30 42/27-7/60 42/27-21/30 42/81-7/30 42/27-7/90 42/27-35/30 42/27-49/30