Subtract 70/30 from 4/90
1st number: 4/90, 2nd number: 2 10/30
4/90 - 70/30 is -103/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
70/30 = 70 × 3/30 × 3 = 210/90 - Subtract the two like fractions:
4/90 - 210/90 = 4 - 210/90 = -206/90 - After reducing the fraction, the answer is -103/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90-70/30 4/90-70/60 12/90-70/30 4/90-70/90 20/90-70/30 28/90-70/30