Subtract 15/63 from 84/25, Solve 3 9/25

Subtract 15/63 from 84/25

1^st number: 3 9/25, 2^nd number: 15/63

84/25 - 15/63 is 1639/525.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575

Next, find the equivalent fraction of both fractional numbers with denominator 1575
For the 1st fraction, since 25 × 63 = 1575,
84/25 = 84 × 63/25 × 63 = 5292/1575
Likewise, for the 2nd fraction, since 63 × 25 = 1575,
15/63 = 15 × 25/63 × 25 = 375/1575
Subtract the two like fractions:
5292/1575 - 375/1575 = 5292 - 375/1575 = 4917/1575
After reducing the fraction, the answer is 1639/525
In mixed form: 364/525

MathStep (Works offline)

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