Subtract 30/4 from 1/90
1st number: 1/90, 2nd number: 7 2/4
1/90 - 30/4 is -337/45.
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,
1/90 = 1 × 2/90 × 2 = 2/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
30/4 = 30 × 45/4 × 45 = 1350/180 - Subtract the two like fractions:
2/180 - 1350/180 = 2 - 1350/180 = -1348/180 - After reducing the fraction, the answer is -337/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-30/4 1/90-60/4 1/90-30/8 3/90-30/4 1/90-90/4 1/90-30/12 5/90-30/4 1/90-30/20 7/90-30/4 1/90-30/28