Subtract 12/4 from 7/90
1st number: 7/90, 2nd number: 3 0/4
7/90 - 12/4 is -263/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
12/4 = 12 × 45/4 × 45 = 540/180 - Subtract the two like fractions:
14/180 - 540/180 = 14 - 540/180 = -526/180 - After reducing the fraction, the answer is -263/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90-12/4 7/90-24/4 7/90-12/8 21/90-12/4 7/90-36/4 35/90-12/4 7/90-60/4 7/90-12/20 49/90-12/4 7/90-84/4 7/90-12/28