Subtract 7/40 from 35/90
35/90 - 7/40 is 77/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
35/90 = 35 × 4/90 × 4 = 140/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Subtract the two like fractions:
140/360 - 63/360 = 140 - 63/360 = 77/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90-7/40 35/90-14/40 35/90-7/80 35/90-21/40 35/90-35/40 35/90-49/40