Subtract 96/72 from 18/28, Solve 18/28

Subtract 96/72 from 18/28

1^st number: 18/28, 2^nd number: 1 24/72

18/28 - 96/72 is -29/42.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 28 × 18 = 504,
18/28 = 18 × 18/28 × 18 = 324/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
96/72 = 96 × 7/72 × 7 = 672/504
Subtract the two like fractions:
324/504 - 672/504 = 324 - 672/504 = -348/504
After reducing the fraction, the answer is -29/42

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad