Subtract 5/21 from 70/25, Solve 2 20/25

Subtract 5/21 from 70/25

1^st number: 2 20/25, 2^nd number: 5/21

70/25 - 5/21 is 269/105.

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

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
70/25 = 70 × 21/25 × 21 = 1470/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
5/21 = 5 × 25/21 × 25 = 125/525
Subtract the two like fractions:
1470/525 - 125/525 = 1470 - 125/525 = 1345/525
After reducing the fraction, the answer is 269/105
In mixed form: 259/105

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