Subtract 12/27 from 7/30
7/30 - 12/27 is -19/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
7/30 = 7 × 9/30 × 9 = 63/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270 - Subtract the two like fractions:
63/270 - 120/270 = 63 - 120/270 = -57/270 - After reducing the fraction, the answer is -19/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30-12/27 7/30-24/27 7/60-12/27 7/30-12/54 21/30-12/27 7/30-36/27 7/90-12/27 7/30-12/81 35/30-12/27 7/30-60/27 49/30-12/27 7/30-84/27