Subtract 30/32 from 42/7
1st number: 6 0/7, 2nd number: 30/32
42/7 - 30/32 is 81/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 7 × 32 = 224,
42/7 = 42 × 32/7 × 32 = 1344/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
30/32 = 30 × 7/32 × 7 = 210/224 - Subtract the two like fractions:
1344/224 - 210/224 = 1344 - 210/224 = 1134/224 - After reducing the fraction, the answer is 81/16
- In mixed form: 51/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-30/32 42/7-60/32 42/14-30/32 42/7-30/64 42/7-90/32 42/21-30/32 42/7-30/96 42/35-30/32 42/49-30/32