Subtract 70/20 from 48/90
1st number: 48/90, 2nd number: 3 10/20
48/90 - 70/20 is -89/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
48/90 = 48 × 2/90 × 2 = 96/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Subtract the two like fractions:
96/180 - 630/180 = 96 - 630/180 = -534/180 - After reducing the fraction, the answer is -89/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/90-70/20 48/90-70/40 48/90-70/60