Subtract 84/90 from 7/4
1st number: 1 3/4, 2nd number: 84/90
7/4 - 84/90 is 49/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
7/4 = 7 × 45/4 × 45 = 315/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
84/90 = 84 × 2/90 × 2 = 168/180 - Subtract the two like fractions:
315/180 - 168/180 = 315 - 168/180 = 147/180 - After reducing the fraction, the answer is 49/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4-84/90 7/8-84/90 21/4-84/90 7/12-84/90 35/4-84/90 7/20-84/90 49/4-84/90 7/28-84/90