Subtract 1/25 from 70/21, Solve 3 7/21

Subtract 1/25 from 70/21

1^st number: 3 7/21, 2^nd number: 1/25

70/21 - 1/25 is 247/75.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 21 × 25 = 525,
70/21 = 70 × 25/21 × 25 = 1750/525
Likewise, for the 2nd fraction, since 25 × 21 = 525,
1/25 = 1 × 21/25 × 21 = 21/525
Subtract the two like fractions:
1750/525 - 21/525 = 1750 - 21/525 = 1729/525
After reducing the fraction, the answer is 247/75
In mixed form: 322/75

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