Subtract 21/70 from 35/15, Solve 2 5/15

Subtract 21/70 from 35/15

1^st number: 2 5/15, 2^nd number: 21/70

35/15 - 21/70 is 61/30.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
35/15 = 35 × 14/15 × 14 = 490/210
Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210
Subtract the two like fractions:
490/210 - 63/210 = 490 - 63/210 = 427/210
After reducing the fraction, the answer is 61/30
In mixed form: 21/30

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