Subtract 30/35 from 40/48
40/48 - 30/35 is -1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 35 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 48 × 35 = 1680,
40/48 = 40 × 35/48 × 35 = 1400/1680 - Likewise, for the 2nd fraction, since 35 × 48 = 1680,
30/35 = 30 × 48/35 × 48 = 1440/1680 - Subtract the two like fractions:
1400/1680 - 1440/1680 = 1400 - 1440/1680 = -40/1680 - After reducing the fraction, the answer is -1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/48-30/35 40/48-60/35 40/96-30/35 40/48-30/70 40/48-90/35