Subtract 21/35 from 70/25, Solve 2 20/25

Subtract 21/35 from 70/25

1^st number: 2 20/25, 2^nd number: 21/35

70/25 - 21/35 is 11/5.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 35 is 175

Next, find the equivalent fraction of both fractional numbers with denominator 175
For the 1st fraction, since 25 × 7 = 175,
70/25 = 70 × 7/25 × 7 = 490/175
Likewise, for the 2nd fraction, since 35 × 5 = 175,
21/35 = 21 × 5/35 × 5 = 105/175
Subtract the two like fractions:
490/175 - 105/175 = 490 - 105/175 = 385/175
After reducing the fraction, the answer is 11/5
In mixed form: 21/5

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