Subtract 30/32 from 7/30
7/30 - 30/32 is -169/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 30 × 16 = 480,
7/30 = 7 × 16/30 × 16 = 112/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
30/32 = 30 × 15/32 × 15 = 450/480 - Subtract the two like fractions:
112/480 - 450/480 = 112 - 450/480 = -338/480 - After reducing the fraction, the answer is -169/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30-30/32 7/30-60/32 7/60-30/32 7/30-30/64 21/30-30/32 7/30-90/32 7/90-30/32 7/30-30/96 35/30-30/32 49/30-30/32