Subtract 7/75 from 49/21, Solve 2 7/21

Subtract 7/75 from 49/21

1^st number: 2 7/21, 2^nd number: 7/75

49/21 - 7/75 is 56/25.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 21 × 25 = 525,
49/21 = 49 × 25/21 × 25 = 1225/525
Likewise, for the 2nd fraction, since 75 × 7 = 525,
7/75 = 7 × 7/75 × 7 = 49/525
Subtract the two like fractions:
1225/525 - 49/525 = 1225 - 49/525 = 1176/525
After reducing the fraction, the answer is 56/25
In mixed form: 26/25

MathStep (Works offline)

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