Subtract 36/40 from 60/90
60/90 - 36/40 is -7/30.
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,
60/90 = 60 × 4/90 × 4 = 240/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
36/40 = 36 × 9/40 × 9 = 324/360 - Subtract the two like fractions:
240/360 - 324/360 = 240 - 324/360 = -84/360 - After reducing the fraction, the answer is -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90-72/40 60/90-36/80